Overview

Released in Australia in August 2015, the Mazda ND MX-5 was a two-door convertible with a soft-top roof; please note that the Mazda ND MX-5 RF has been reviewed separately. Manufactured at Mazda’s Ujina plan in Japan, the rear-wheel drive Mazda MX-5 was powered by 1.5- and 2.0-litre four-cylinder petrol engines were mated to six-speed manual and automatic transmissions. Furthermore, the MX-5 range consisted of Roadster and Roadster GT variants.

In September 2018, the Mazda MX-5 Roadster range was revised as the MX-5 Roadster GT was no longer available with a 1.5-litre engine.

SkyActiv-G engines

The 1.5-litre SkyActiv-G four-cylinder engine had an aluminium block and cylinder head, electronically-controlled direct petrol injection, double overhead camshafts, four valves per cylinder, electric intake sequential valve timing and oil exhaust sequential valve timing (dual sequential valve timing or ‘dual S-VT’. Furthermore, the 1.5-litre engine had a compression ratio of 13.0:1 and 7500 rpm redline. The 2.0-litre SkyActiv-G engine had similar properties, but with a 6800 rpm redline.

For both engines, 95 RON premium unleaded petrol was recommended.

SkyActiv-G engines: post-September 2018

From September 2018 deliveries, the following changes were introduced for the 2.0-litre SkyActiv-G engine:

• A larger throttle diameter, ‘common type’ intake ports (previously discrete type), shortened intake manifold length and increased valve diameter. The common type intake ports increased tumble-swirl for faster combustion;
• For the pistons, lower crown height, a reduced skirt area and a 27 gram mass reduction (per piston) to reduce mechanical friction;
• For the connecting rods, newly-developed high-rigidity bolts and ‘optimised’ thickness for a 41 gram mass reduction (per rod);
• New high-diffusion fuel injectors which sprayed fuel over a shorter distance to prevent fuel sticking to the cylinder walls;
• The redline was raised to 7500 rpm (previously 6800 rpm);
• A new control scheme to achieve three-stage, split fuel injection in the engine’s low-rev/high-load operating range;
• A re-balanced crankshaft (still with eight counterweights) which contributed to a ‘minimal’ mass increase;
• For the exhaust valves, increased valve and exhaust port diameters (the latter to suppress exhaust gas separation), increased exhaust valve opening angle and light height, and increased internal diameter for the exhaust manifold. According to Mazda, these changes contributed to a 30 per cent reduction in pumping losses; and,
• For the main silencer, a new inner structure (i.e. new exhaust gas routing and newly-adopted fiberglass materials) to absorb high-frequency sounds.

The following changes were also introduced for the 1.5-litre SkyActiv-G engine for post-September 2018 deliveries:

• A higher-pressure fuel pump so the fuel injectors could feed more finely atomised fuel particles across a broader range through a multi-stage, split-injection method; and,
• Newly-designed piston crowns which had a stepped upper rim.

Beyond these changes, Mazda sought to reduce the lag between pressing the accelerator and engine response –

• For models with manual transmissions, uneven changes in acceleration – caused by torsion and released in torque-transmitting components – were suppressed using predictive control measures. A dual-mass flywheel was also introduced; and,
• For models with automatic transmissions, acceleration control was improved and the final drive ratio was raised from 3.454 to 3.583 for better synchronisation between the engine and torque converter rotation. Furthermore, shift timing at turn-in and torque control at turn-out were also revised for ‘greater precision in sporty driving situations’.

Dimensions and body

Compared to the Mazda NC MX-5 , the ND MX-5 was 105 mm shorter (at 3915 mm), 15 mm wider (1735 mm), 15 mm lower (1230 mm) and had a 20 mm shorter wheelbase (2310 mm). Despite the smaller external dimensions, the cabin was 65 mm longer (at 940 mm), 10 mm wider (1425 mm) and 10 mm higher (1055 mm), though shoulder room was reduced by 30 mm (to 1325 mm).

With a kerb weight of 1009 kg, MX-5 Roadster with the 1.5-litre engine was 91 kg lighter than the NC MX-5 due to its more compact design, lighter soft-top roof and the use of aluminium for the model’s bonnet, boot lid, front fender and bumper reinforcements. Furthermore, the ND MX-5 had a 50:50 front:rear weight distribution.

Suspension and steering

The Mazda ND MX-5 had double wishbone front suspension and multi-link rear suspension. For the front suspension, a negative kingpin offset was adopted and castor angle was reduced from 8° to 7°. The rear suspension utilised a new truss structure for the cross-member to increase rigidity, while the positioning of the rear links was revised for improved geometry when cornering.

The ND MX-5 introduced Mazda’s dual pinion electric power-assisted steering.

Safety equipment

Standard safety equipment for the Mazda MX-5 included dual front airbags, side airbags, ABS, electronic brake force distribution, brake assist, electronic stability control, traction control and front seatbelts with pre-tensioners and load limiters.

From October 2016 production, the Mazda MX-5 was also fitted with:

• Blind Spot Monitoring (BSM): used a quasi-milliwave radar and operated at speeds in excess of 10 km/h to detect vehicles approaching from behind or in the driver’s blind spot (on either side of the vehicle); and,
• Rear Cross Traffic Alert (RCTA): could warn the driver of approaching traffic when reversing from a parking space by sounding an audible alert and illuminating LED icons in the door mirrors.

From March 2018, the Mazda MX-5 GT was equipped with –

• Lane Departure Warning (LDW): used a windscreen mounted camera to monitor the vehicle’s position relative to lane markings. If the driver was about to cross lane markings without the turn indicator having been applied, an audible alert would sound; and,
• Mazda’s ‘Adaptive LED Headlamps’ (ALH): combined ‘Glare-free High Beam’, which controlled the illumination coverage of the high beams to avoid dazzling other drivers, and ‘Wide-range Low Beam’, which expanded the area of illumination.

In September 2018, standard safety technologies for the Mazda MX-5 were extended to include:

• Smart City Brake Support (Forward) with pedestrian detection (SCBS F): operating at speeds between 4 km/h and 80 km/h for vehicle detection and 10 km/h to 60 km/h for pedestrian detection, SCBS Forward used a near-infrared sensor that was mounted on the windscreen for ‘precision detection’ of objects up to six metres ahead of the vehicle. When an obstacle was detected and a high risk of collision was assessed, the brakes would be applied automatically to avoid or reduce the severity of the collision (i.e. autonomous emergency braking or AEB); and,
• Traffic Sign Recognition (TSR): used the forward-facing camera to detect speed limit, ‘No Entry’ and ‘Stop’ signs while driving and display them on the Active Driving Display.

From September 2018, the Mazda MX-5 GT was further equipped with:

• For SCBS Reverse: operated at speeds between 2 km/h and 8 km/h and used ultrasound sensors in the rear bumper to detect obstacles up to two metres behind the vehicle. Like SCBS F, AEB would be initiated when an obstacle was detected and there was a high risk of a collision; and,
• Driver Attention Alert (DAA): operating at speeds above 65 km/h, the DAA system initially observed driver behaviour – such as steering wheel operation, vehicle speed and lane positioning – for 20 minutes to establish a benchmark. The DAA system then monitored driver behaviour for signs of fatigue and recommended rest breaks if detected. Furthermore, alerts would be issued if the driver had been driving continuously for more than two hours.

Brakes

The Mazda ND MX-5 Roadster 1.5i had 258 mm (diameter) ventilated front brake discs and 255 mm solid rear discs. The MX-5 Roadster 2.0i, however, had 280 mm ventilated front brake discs and 280 mm solid rear discs.

Euro NCAP testing

In Euro NCAP testing , the Mazda ND MX-5 received a four star safety rating which included an 84 per cent adult occupant protection rating and an 80 per cent child occupant protection rating. In the frontal offset test, protection of the front passenger and the driver’s thighs and feet were rated as good, though protection of the driver’s head, chest and lower legs was rated as adequate (i.e. a slight risk of serious injury). In the side impact test, chest protection was assessed as adequate; in the more severe pole test, chest protection was rated as marginal.

Features: Mazda MX-5 Roadster

Standard features for the MX-5 Roadster 1.5i included 16 x 6.5J silver alloy wheels with 195/50 R16 84V tyres, six speaker sound system with auxiliary inputs (3.5 mm/USB/iPod), Bluetooth mobile phone connectivity and audio streaming, black cloth seat trim, air conditioning, cruise control, LED headlights, leather-wrapped steering wheel and gear shift knob, remote central locking, power windows and mirrors, a tilt adjustable steering wheel, push-button start, tyre pressure monitoring, a trip computer and an immobiliser.

The MX-5 Roadster 2.0i was further equipped with 17 x 7.0J gunmetal alloy wheels with 205/45 R17 84W tyres and LED daytime running lights.

As standard, all Mazda MX-5 models with manual transmissions were fitted with a limited slip differential.

Features: Mazda MX-5 Roadster GT

Relative to Roadster 1.5i, the MX-5 Roadster GT 1.5i was further equipped with a Bose sound system with a 203 watt amplifier nine speakers, Mazda’s ‘MZD Connect’ system with a seven-inch touchscreen, satellite navigation and Internet radio integration, leather seat trim (black or optional tan), heated front seats, climate control air conditioning, LED daytime running lights, automatic headlights, rain-sensing wipers, proximity key (i.e. keyless entry), heated mirrors and an auto-dimming rear view mirror. Visually, the Roadster GT 1.5i could be identified by its 16-inch gunmetal alloy wheels and piano black door mirror caps.

The MX-5 Roadster GT 2.0i was distinguished by its 17-inch bright alloy wheels with 205/45 R17 84W tyres.

Paint colours

The Mazda MX-5 was available in Soul Red, Ceramic Metallic, Crystal White Pearl Mica, Jet Black Mica, Meteor Grey Mica and Blue Reflex Mica paint finishes.

March 2018 update

In March 2018, the following updates were introduced for the Mazda ND MX-5 Soft-top:

• For the rear suspension, the upper link bushings were lowered and the rear bump stops were lengthened to improve ride comfort;
• Noise-absorbing material was added to the top of the centre driveline tunnel;
• Holes/gaps around centre driveline tunnel reinforcements were reduced;
• An improved dashboard insulator was fitted; and,
• Vibration-damping and noise-absorbing materials were added to the rear wheel housings.

September 2018 update

In September 2018, the following updates were introduced for the Mazda ND MX-5:

• A rear camera (‘Rear Monitor’) was made standard across the range;
• The steering wheel column gained telescopic adjustment (30 mm);
• The detachable cup holders were made more rigid;
• The seat recline levers gained thicker internal frames ‘to give a more assured feel when operating’;
• Door opening and closing was improved by changing the checker from a three-stage to a two-stage type. The increased distances between the door pause points allowed users to position the doors across a wider range of operation; and,
• Mazda MX-5 Roadster models with 1.5-litre engines were fitted with 16-inch alloy wheels that had a black metallic finish (previously aluminium).

June 2019 update

From June 2019, the Mazda ND MX-5 was equipped with Apple CarPlay and Android Auto smartphone integration.

2019 Mazda MX-5 30th Anniversary Edition

The Mazda MX-5 30th Anniversary Edition was released in Australia in June 2019. Based on the Mazda MX-5 Roadster GT, the Mazda MX-5 30th Anniversary Edition was distinguished by its Rays ZE40 RS30 forged alloy wheels, Racing Orange-painted Brembo front callipers and Nissin rear callipers, Racing Orange paint finish and anniversary badge. The MX-5 30th Anniversary Edition was also fitted with Bilstein dampers.

Inside, the Mazda MX-5 30th Anniversary Edition featured orange piping and stitching on the Recaro seats, Alcantara trim for the doors and dashboard, and orange stitching on the steering wheel, shift lever, dash and doors. The Mazda MX-5 30th Anniversary Edition was also equipped with Apple CarPlay and Android Auto smartphone integration.

Thirty Mazda MX-5 30th Anniversary Edition vehicles were released in Australia from a production run of 3000.

Brochure

• Brochure: Mazda ND MX-5 Soft-top (September 2015)
• Brochure: Mazda ND MX-5 Soft-top and MX-5 RF (December 2016)
• Brochure: Mazda ND MX-5 Soft-top and MX-5 RF (June 2019)

Related links

• Mazda Australia: Mazda MX-5
• Wikipedia.org: Mazda ND MX-5

Review: Mazda NC.I MX-5 (2005-09)

Overview

Released in September 2005, the Mazda NC Series I (NC.I) MX-5 was initially offered as a two-seat, soft-top convertible. Manufactured in Hiroshima, Japan, the rear-wheel drive MX-5 was powered by a 2.0-litre four-cylinder petrol engine – with variable valve timing – that was mated to either a six-speed manual or six-speed automatic transmission.

In September 2006, the range was expanded with a ‘Roadster Coupe’ variant which had a power operated, three-piece retractable hardtop. The Soft-top range was also revised and consisted of an unnamed, entry-level edition and the better-equipped Touring edition (effectively replacing the Leather editions).

Dimensions and body

Compared to the Mazda NB MX-5 which preceded it, the NC MX-5 Soft-top was 20 mm longer (at 3995 mm), 40 mm wider (1720 mm), 20 mm taller (1245 mm) and had a 65 mm longer wheelbase (2330 mm); kerb weight was 1115 kg. Furthermore, The chassis achieved a 22 per cent increase in bending rigidity and a 47 per increase in torsional rigidity, while the engine was moved 135 mm rearwards for a 50:50 weight distribution.

For the Roadster Coupe, its power-operated hardtop roof could be opened or closed in 12 seconds once manually unlatched. Due to additional bracing, a steel bootlid (in place of the soft top’s aluminium bootlid) and a more complex wiring harness, the MX-5 Roadster Coupe was 37 kg heavier at 1152 kg. Other changes for the MX-5 Roadster Coupe included:

• a 10 mm higher roofline;
• a larger rear window;
• the front edge of the rear deck was raised by 40 mm;
• the retilaing edge of the bootlid was raised by 20 mm; and,
• the rear wheel arches had more prominent contours.

Suspension

The Mazda NC MX-5 had double wishbone front suspension and multi-link rear suspension (previously rear double wishbones for its NB predecessor). For the MX-5 Roadster Coupe, the suspension was revised with a larger front stabiliser bar (22.2 mm diameter compared to 21.0 mm for the Soft-top), unique settings for the front dampers and stiffer rear springs and dampers.

Safety equipment

Standard safety equipment for the Mazda NC MX-5 included dual front airbags, front side airbags, ABS, electronic brake force distribution, active front seat head restraints and front seatbelts with pretensioners and load limiters. In September 2006, electronic stability control and traction control were made standard.

Brakes

The Mazda NC MX-5 had 290 mm by 22 mm vented front brake discs and 280 mm by 10 mm solid rear discs.

Features

Standard features for the Mazda MX-5 Soft-top included 17-inch alloy wheels, a six speaker sound system with a six-stack CD player, air conditioning, cruise control, front fog lights, a leather-wrapped steering wheel with audio controls, remote central locking, power windows and mirrors, a tilt adjustable steering wheel and an immobiliser. Manual models were also fitted with a limited slip differential, while the ‘Activematic’ (automatic) models featured steering-wheel gearshift paddles

The Soft-top Leather and Touring editions, as well as the Roadster Coupe variants, were further equipped with a seven speaker, 200 watt Bose sound system (with speed dependent volume control) and leather seats.

Mazda MX-5 Limited Edition

To coincide with the release of the Mazda NC.I MX-5, a Limited Edition Soft-top was released. Compared to the standard Soft-top, the Limited Edition was distinguished by its red leather interior and selected paint colours (Brilliant Black, Galaxy Grey or Velocity Red mica).

In February 2007, another MX-5 ‘Limited Edition’ was released; based on the Soft-top Touring, it added 17-inch BBS alloy wheels, Bilstein shock absorbers, ‘sand’ coloured leather seats and leather-wrapped steering wheel, brushed aluminium-look dashboard highlights, stainless steel scuff plates, chrome-ringed air vents and meter rings, chrome grille and headlight bezels.

Related links

• Brochure: Mazda NC.I MX-5 (August 2005)

Review: Mazda NC.II MX-5 (2009-12)

Overview

Released in March 2009, the NC Series II (NC.II) MX-5 introduced a revised line-up, facelift and upgraded engine. For the NC.II MX-5, changes for the 2.0-litre LF-VE four-cylinder engine included:

• A forged crankshaft to reduce vibrations at higher engine speeds;
• Fully-floating pistons with higher pin-boss reliability;
• New-design valve springs to suppress valve ‘bounce’ at higher engine speeds;
• More durable material for the connecting-rod bearings;
• New connecting-rod bearings;
• An Induction Sound Enhancer (ISE) which transmitted induction noise into the cabin via a plastic duct in the dashboard; and,
• A more rigid surge tank.

As a result of these changes, maximum engine speed was increased to 7500 rpm (previously 7000 rpm).

The Mazda NC.II MX-5 was distinguished by its single front fascia bumper, five-point grille, new headlights, triangular front fog lamp bezels, garnished side skills, revised rear bumper and new rear combination lamps. Compared to the Soft-top, the Roadster Coupe was differentiated by its mesh grille, chrome finish inner headlight bezel, silver fog lamp surrounds and chrome door handles.

Inside, the Mazda NC.II MX-5 featured red-backlit LCD tripmeter/odometer, more supportive seat bolsters, silver-ringed climate control knobs and soft-touch centre console cover. For the MX-5 Roadster Coupe, sound insulation was improved with urethane filling for the front suspension area and new damping in the front roof section.

The suspension for the NC.II MX-5 was re-tuned for more precise steering and ‘more natural’ yaw and roll feel, while the height of the front roll centre was lowered by 26 mm for more linear steering response.

Features

Standard features were substantially unchanged, though the sound system now featured an auxiliary MP3 input and the driver’s seat was height adjustable. The newly introduced Roadster Coupe Sports was distinguished by its leather/Alcantara Recaro sports seats and BBS alloy wheels.

2011 MX-5 Special Edition

In February 2011, a limited-run Roadster Coupe Special Edition was released; it was distinguished by its bright 17-inch alloy wheels, Bilstein-tuned suspension, painted strut tower bar, unique grey leather seats, steering wheel and handbrake with grey highlight stitching and chrome meter rings and air vent bezels.

Related links

• Press Kit: Mazda NC.II MX-5 (March 2009)
• Technical data: Mazda NC.II MX-5 (March 2009)

Review: Mazda NC.III MX-5 (2012-14)

Overview

Released in October 2012, the Mazda NC Series III (NC.III) MX-5 introduced a revised range as the soft-top models were discontinued. Visually, the Mazda NC.III MX-5 could be identified by its larger five-point grille and lighter front bumper, new front fog light bezels, front chin spoiler and gunmetal alloy wheels. Inside, matte dark silver finishes for decoration panels and steering wheel bezel were replaced with a glossy dark grey finish.

For models with manual transmissions, revised throttle management software was introduced to provide greater throttle response when accelerating out of corners. For all models, upgraded brake boosters were fitted for better front and rear load distribution under braking. Furthermore, greater refinement was also achieved through stiffer door modules, a urethane-filled front suspension cross member, a reinforced second cross member and additional damping material in the front-most section of the roof.

Safety equipment

Compared to its NC.II predecessor, standard safety equipment was extended to include an ‘active’ bonnet which would lift its trailing edge – when certain frontal impacts were detected – to reduce the forces that a pedestrian would experience on impact with the bonnet.

Features

Standard features for the Mazda NC.III MX-5 Roadster Coupe included 17-inch alloy wheels, a 200 watt Bose sound system with amplifier, seven speakers, six-disc CD player, MP3-compatibility and auxiliary input (3.5 mm), air conditioning, leather sports seats, cruise control, front fog lights, a leather-wrapped steering wheel and gearshift knob, remote central locking, power windows and mirrors, a tilt adjustable steering wheel, height adjustable driver’s seat and an immobiliser. As before, models with automatic transmissions featured steering wheel gearshift paddles, while models with manual transmissions were fitted with a limited slip rear differential.

The MX-5 Sports edition was distinguished by its BBS alloy wheels and Recaro front seats with leather and alcantara trim.

Mazda MX-5 25th Anniversary

In August 2014, forty (40) MX-5 25th Anniversary edition vehicles were released in Australia. The MX-5 25th Anniversary edition could be identified by its ’25th anniversary’ badge, ‘Soul Red’ metallic paint finish, black painted A-pillars, door mirrors and retractable roof. Inside, the MX-5 25th Anniversary edition featured off-white leather upholstery, a red decoration panel, stainless steel scuff plates (with the ’25th anniversary’ logo) and door trim, and a black leather arm rest, steering wheel and gearshift knob with red stitching. Furthermore, each MX-5 25th Anniversary edition was sold with a Tourneau commemorative watch set.

Brochures

• Brochure: Mazda NC.III MX-5 (January 2014)
• Brochure: Mazda NC.III MX-5 25th Anniversary edition (July 2014)

Related links

• Press Kit: Mazda NC.III MX-5 (October 2012)
• Specifications: Mazda NC.III MX-5 (October 2012)
• Wikipedia.org: Mazda NC MX-5

Review: Mazda NA.I MX-5 (1989-93)

Overview

Released in October 1989, the Mazda NA Series I (NA.I) MX-5 was a two-seat convertible with a soft-top roof, though a detachable plastic hardtop was available as an option. Manufactured in Hiroshima, Japan, the rear-wheel drive NA.I MX-5 was powered by a 1.6-litre four-cylinder petrol engine that was mated to a five-speed manual transmission.

B6ZE(RS) engine

The NA.I MX-5 was powered by a specially developed 1.6-litre B6ZE(RS) non-interference petrol engine which had a cast iron block, an alloy cylinder head, double overhead camshafts (belt-driven), four valves per cylinder, a compression ratio of 9.4:1. Special features of this engine included its aluminium sump with cooling fins and lightweight crankshaft and flywheel which contributed to a 7200 rpm redline.

Dimensions and suspension

The MX-5 was 3975 mm long, 1675 mm wide, 1230 mm tall and had a 2265 mm long wheelbase; kerb weight was 955 kg, while the drag coefficient was 0.38 Cd. Furthermore, the NA MX-5 had independent, double wishbone suspension front and rear with coil springs and anti-roll bars.

Safety equipment

The Mazda NA MX-5 was not fitted with safety equipment such as airbags or ABS.

Features

Standard features for the Mazda NA.I MX-5 included 14-inch alloy wheels, a four speaker sound system with a radio and cassette player, leather-wrapped steering wheel and power windows.

In December 1991, standard features were extended to include a remote boot release, a heated rear window and an overhead reading light.

From January 1993, power-assisted steering was fitted as standard.

MX-5 Neo Green, Malibu Gold and Classic Red editions

In October 1990, three hundred ‘Neo Green’ MX-5s were released which featured a CD player and tan leather trim; visually, these models could also be identified by their ‘Neo Green’ paint finishes.

From November 1991, fifty-five ‘Malibu Gold’ MX-5s were released; these models were distinguished by their standard CD player, headrest speakers and ‘Malibu Gold’ paint finish.

In May 1993, one hundred ‘Classic Red’ editions were released; these models were distinguished by their BBS alloy wheels, CD player, headrest speakers, leather trim and ‘Classic Red’ paint finish.

Review: Mazda NA.II MX-5 (1993-97)

Overview

Released in November 1993, the Mazda NA Series II (NA.II) MX-5 introduced a new 1.8-litre four-cylinder engine and the availability of four-speed automatic transmissions. Furthermore, the MX-5 chassis underwent substantial bracing for improved side impact protection with braces fitted between the seatbelt towers and the front and rear subframes.

The 1.8-litre BP-ZE engine differed from the previous 1.6-litre B6ZE(RS) unit in that it had a new block (83 mm bore, 85 mm stroke) with widened cylinder spacing, a forged crankshaft, compression ratio of 9.0:1 and a 7000 rpm redline.

Visually, the NA.II MX-5 could be identified by its new alloy wheel designs, though there were no changes to its body. Inside, there was new cabin trim and door pockets. The MX-5 range was also expanded with the introduction of Clubman variants that were fitted with sports suspension and a limited-slip rear differential.

Safety equipment and features

Compared to its NA.I predecessor, standard safety equipment and features for the NA.II MX-5 were unchanged.

January 1996: MX-5 update

In January 1996, the MX-5 was updated with new door armrests, anti-submarining seats and an upgraded sound system; the Clubman variants were also fitted with a limited-slip Torsen differential.

MX-5 Neo Green

In January 1996 and 1997, ‘Neo Green’ limited edition models were released; these models featured CD players, leather trim and ‘Neo Green’ paint finishes.

Related links

• Wikipedia.org: Mazda NA MX-5

Review: Mazda NB.I MX-5 (1998-00)

Overview

Released in March 1998, the Mazda NB Series I (NB.I) MX-5 was a two-door convertible, available with a soft-top or removable fibre-reinforced plastic (FRP) hardtop. Manufactured in Hiroshima, Japan, the rear-wheel drive NB.I MX-5 was powered by a 1.8-litre four-cylinder petrol engine that was initially mated to either a four-speed automatic or five-speed manual transmission. Limited-run 10th Anniversary and Heritage editions, however, were fitted with a six-speed manual transmission (see table below).

1.8-litre BP-4W engine

The 1.8-litre BP-4W non-interference petrol engine had a cast iron block, an alloy cylinder head, double overhead camshafts (belt-driven) and four valves per cylinder. Compared to the 1.8-litre BP-ZE engine of the NA.II MX-5, the BP-4W engine had domed pistons for a higher compression ratio (9.5:1, previously 9.0:1), the intake camshaft was changed to a solid lifter design, the intake runners in the cylinder head were straightened, the intake manifold was repositioned and Mazda’s Variable Intake Control System (VICS) was introduced which used provided a long, narrow intake at low rpm for better swirl and a short, free-flowing manifold at high rpm for greater power.

Dimensions and body

Compared to its NA MX-5 predecessor, the NB MX-5 was 5 mm wider (at 1680 mm) and 5 mm lower (1225 mm), but its length and wheelbase were unchanged (at 3975 mm and 2265 mm, respectively). Greater torsional rigidity was also achieved due to thicker reinforcement panels and additional strengthening gussets. The NB MX-5 was fitted with a glass rear window (previously plastic) and windblocker as standard, while boot space increased by 40 per cent to 144 litres by relocating the spare wheel and battery under the floor.

Suspension

Like its NA predecessor, the NB MX-5 had independent double wishbone suspension front and rear, but with thicker front and rear anti-roll bars. Furthermore, front track was increased by 10 mm (to 1415 mm), a new hub carrier upright added 20 mm to the rear track (1440 mm) and rear suspension travel was increased by 10 mm to 100 mm.

Safety equipment

Standard safety equipment for the NB.I MX-5 was limited to dual front airbags; the 10th Anniversary edition was also equipped with ABS.

Features

Standard features for the MX-5 included 15-inch alloy wheels, a four speaker sound system with a radio and cassette player, a leather-wrapped steering wheel, central locking, power mirrors and windows, a glass rear window, windblocker and an immobiliser.

1999 MX-5 10^thAnniversary edition

In January 1999, the MX-5 10^thAnniversary edition was released. Compared to the standard MX-5, the 10th Anniversary edition featured 15-inch polished alloy wheels, Bilstein sports suspension, strut tower bar, blue soft-top roof and tonneau cover, ‘Innocent Blue Mica’ paint finish, two-tone black and blue interior trim, blue suede-like seat panels, Nardi leather-wrapped steering wheel and gearshift, stainless steel scuff plates, chrome ringed instruments and carbon-fibre interior highlights.

2000 MX-5 Heritage edition

Released in February 2000, the Heritage edition was differentiated by its 15-inch polished alloy wheels, deep metallic burgundy paint finish (‘Art Vin’), leather seats, chrome ringed and white-faced instruments and woodgrain interior finishes for the Nardi steering wheel, gearshift, centre console and park brake.

Review: Mazda NB.II MX-5 (2000-02)

Overview

Released in October 2000, the NB Series II (NB.II) MX-5 introduced a new engine (see ‘1.8-litre BP-Z3 engine’, below), stiffer chassis and a six-speed manual transmission. In January 2002, the turbocharged MX-5 SP was released and a four-speed automatic transmission was introduced for the standard MX-5.

Compared to its NB.I predecessor, the NB.II MX-5 chassis received additional reinforcements with newly added truss members, improved body frame and cross members and an under-bonnet brace between the suspension towers. As a result of these changes, bending rigidity increased by 16 per cent and torsional rigidity by 22 per cent. The suspension was also revised with the introduction of Bilstein dampers which had additional valves for controlling rebound.

Visually, the NB.II MX-5 could be identified by its revised front bumper, slimmer headlights, fog lamps (incorporated into the air dam) and clear tail-lights. Inside, the steering wheel featured a Mazda logo, while the white-faced instruments had amber back lighting and chrome ring surrounds.

1.8-litre BP-Z3 engine

The 1.8-litre BP-Z3 engine had similar properties to the BP-4W engine but omitted VICS and introduced variable intake valve timing (Mazda’s Sequential Valve Timing, or S-VT) and a Variable Tumble Control System (VTCS). The compression ratio was also higher at 10.0:1, compared to 9.5:1 for the BP-4W.

Safety equipment

Compared to its NB.I predecessor, safety equipment was improved with ABS standard across the range. 

Euro NCAP crash testing

In Euro NCAP testing , the NB.II MX-5 received a four star adult occupant protection rating with a score of 25.09. In the frontal offset crash test, protection from serious chest and leg injury was marginal for the driver; in the side impact crash test, there was a slight risk of serious chest and abdomen injury.

Features

Standard features for the NB.II MX-5 were extended to include a CD player.

MX-5 SP (Special Performance)

In January 2002, the range was expanded with a turbocharged SP variant. The 1.8-litre BP-Z3 engine for the MX-5 SP was fitted with a water-cooled Garrett ball-bearing turbocharger (providing maximum boost pressure of 8.0 psi), an air-to-air intercooler and a Bosch blow-off valve; the compression ratio was unchanged at 10.0:1.

Other changes included a new intake, a purpose-cast nickel-alloy manifold, larger volume fuel injectors, a larger radiator, unique spark plugs, a reprogrammed ECU and big bore exhaust system. Despite the extensive modifications, the MX-5 SP was only 34 kg heavier – with a kerb weight of 1119 kg – than the naturally aspirated NB.II MX-5.

Visually, the MX-5 SP could be identified by its larger exhaust, stainless steel scuff plates, alloy air vent surrounds and polished alloy gear knob and fuel filler cap. Inside, the MX-5 SP featured a Nardi leather steering wheel and stainless steel scuff panels.

2002 MX-5 Titanium edition

In March 2002, a manual-only Titanium edition was released. Compared to the standard MX-5, the Titanium edition added a six-stack CD player, camel-coloured leather seats and door inserts, brushed alloy interior highlights and Titanium grey metallic paint finish.

Review: Mazda NB.III MX-5 (2002-03)

Overview

Released in October 2002, the NB Series III (NB.III) was a minor update for the MX-5 range, with the engines slightly detuned to comply with Euro III emission standards.

Safety equipment

For the NB.III MX-5, safety equipment was enhanced with front seatbelt pretensioners and load limiters; the A-pillars were also reshaped for improved collision protection.

Features

The automatic and manual models were also further differentiated: while the automatic models were fitted with 15-inch alloy wheels, the manuals were fitted with 16-inch alloys and a front suspension strut tower bar.

2003 MX-5 Classic edition

In January 2003, a limited-run Classic edition was released; it was distinguished by its Cerrio Silver metallic paint, blue leather trim, blue soft top roof, six-stack CD player, two-tone blue/black Nardi steering wheel, two tone gearshift and park brake and aluminium-look interior finishes (for the centre panel, air vent bezels, gearbox shift plate, door handles and park brake).

Review: Mazda NB.IV (2003-05)

Overview

Released in November 2003, the NB Series IV (NB.IV) MX-5 introduced a number of minor updates; in 2004, the range was expanded with the introduction of a turbocharged SE variant.

Features

The NB.IV MX-5 featured new-look 16-inch alloy wheels for manual models and a larger wind deflector with two speakers (for a total of six). Inside, the dash featured an alloy finish, while there were also alloy highlights for the air vents, door handles and gearshift surround.

Mazda MX-5 SE

Released in March 2004, the turbocharged MX-5 SE featured 17-inch alloy wheels with 205/40 R17 80W tyres, stiffer suspension with Bilstein shock absorbers, torque-sensing limited slip differential, larger exhaust pipe, coloured brake calipers, six-stack CD player, seat fabrics with red inserts, drilled aluminium pedals, body kit (front spoiler with enlarged air intake and recessed fog lamps, boot spoiler, rear underbody spoiler), chrome exhaust tip and stainless steel scuff plates. Black leather trim (highlighted with red stitching) was optional.

The engine for the MX-5 SE had an air-to-air intercooler and a single-scroll turbocharger which provided maximum boost pressure of 7.25 psi (0.5 bar); the compression ratio was reduced to 9.5:1 (from 10.0:1). Other hardware changes for the MX-5 SE included a more efficient radiator, an upgraded clutch, propeller shaft and differential, and a harder rubber compound for the engine and differential mounts.

For the suspension, the coil springs were 20 per cent stiffer, ride height was reduced by 7 mm and thicker anti-roll bars were fitted (1 mm diameter increase for the front roll bar and 2 mm diameter increase for the rear roll bar). Furthermore, the MX-5 SE had a faster steering ratio which required 2.3 turns lock-to-lock, rather than the 2.7 turns of the standard MX-5.

Related links

• Wikipedia.org: Mazda NB MX-5

Recalls: Mazda NC MX-5

Overview

Manufacturers, or importers, issue recalls for defects or faults which have the potential to cause injury. Generally, manufacturers will inform the original buyers if their vehicle is subject to a recall and of the steps required to remedy the defect or fault. Please note that the recalls below (if any) are for Australian-delivered vehicles only. Furthermore, the number of recalls should not be taken as an indication of a model’s reliability or its safety more generally. 

Recalls: Mazda NC MX-5

• In April 2006, a recall was issued for Mazda NC MX-5 vehicles that were manufactured from 22 December 2005 to 15 February 2006 and in the VIN range JM0NC30F100101276 to JM0NC30F100101604. For these vehicles, there was a possibility that if the airbag were inflated in cold conditions, the horn bolt could fracture and disperse the components of the horn switch (PRA 2006/8432).

Problems and faults: Mazda NC MX-5

Overview

This section identifies potential problems, causes and fixes based on the experiences of owners and repairers, online sources and technical service bulletins. This information is provided solely for reference purposes and AustralianCar.Reviews recommends that only properly qualified persons carry out repairs or modifications. Furthermore, the number of items below should not be taken as an indicator of a model’s reliability or the frequency with which they may occur.

To report a problem or fault to the AustralianCar.Reviews team, please use the Contact Us form. Note that AustralianCar.Reviews does not offer advice on automotive problems or disputes; such enquiries will not receive a reply. For vehicles purchased from dealers after 1 January 2011, please see our Australian Consumer Law fact sheet.

Mazda MX-5: VVT ticking noise

In December 2011, Mazda USA issued a Technical Service Bulletin (TSB 01-010/11) for Mazda MX-5 vehicles with 2.0-litre LF-VE engines that were produced prior to 1 December 2007 and had VINs lower than JM1NC******146287. In these vehicles, there may be a loud ticking noise from the variable valve timing (VVT) actuator when the engine was started – this was caused by:

• The lock pin of the variable valve timing actuator not fully engaging; or,
• A worn lock pin hole.

To fix, the cylinder head had to be removed and the VVT actuator replaced. Subsequently, heat treatment was applied to the area around the hole of the variable valve timing rotor lock pin to prevent this from happening.

Mazda NC MX-5: Engine and cooling

• The coolant should be changed every two years with the Mazda-specific coolant to preserve the engine.
• There have been isolated cases of camshaft chain tensioner pulleys wearing out, but these are relatively inexpensive and straightforward to replace.

Mazda NC MX-5: Suspension

The rear dampers and anti-roll bar drop links (front and rear) are estimated to require replacement every three years or 50,000 kms.

Mazda NC MX-5: Manual transmission

For the Mazda MX-5’s manual transmission, the gearshift from first to second may be stiff when the vehicle is cold, but this resistance should decrease once the vehicle warms up. Clutch life is estimated at around 100,000 kms, even with hard driving.

In hot weather, the Mazda MX-5’s clutch may have excessive free play and not disengage fully.

Mazda NC MX-5: heater performance at idle

In March 2006, Mazda USA issued service bulletin 07-001/06 for Mazda NC MX-5 vehicles that were manufactured prior to 22 December 2005 and had VINs preceding JM1 NC**** 60 1112258. Owners that parked their vehicle on a decline or braked hard while the engine was still cold may experience abnormal heater performance at idle because of air moving up from the radiator sub-tank, through the thermostat housing and becoming trapped in the heater core and/or its supply lines.

To prevent this condition, the shape of the hose between the radiator sub-tank and the thermostat was changed. To fix, the water hose was to be replaced with the updated part (part number LFG1-15-183B).

Mazda NC MX-5: squeaking noise when clutch pedal is depressed

In April 2006, Mazda USA issued service bulletin 05-002/06 for Mazda NC MX-5 vehicles that were manufactured before 1 January 2006 and had VINs preceding JM1 NC**** ** 111723. In these vehicles, a squeaking noise may be heard when the clutch pedal is depressed. According to the service bulletin, this noise came from the starter interlock switch. To fix, the starter interlock switch was to be replaced with an updated part (part number NE55-66-4D0). As a result of this problem, the plastic material in the starter interlock switch was subsequently changed.

Mazda NC MX-5: water leak at front of convertible top

In April 2006, Mazda USA issued service bulletin 09-013/06 for Mazda NC MX-5 vehicles that were manufactured before 1 February 2006 and had VINs preceding JM1 NC**** ** 113573. In heavy rain, water leakage may occur at the front of the convertible roof, around the female wedge. According to the service bulletin, this occurred because water was not completely draining from the drain hole and entered between the header weather-strip and windscreen header panel.

To fix, the female wedge on the side where the water leakage occurred was to be removed. If there was a dent in the windscreen header panel (beneath the weather strip), then a plastic windshield setting tool (part number IS742) was to be used to press on the weather strip at the dent area. The lip of the weather strip could then be rolled up so that a foam pad (part number NEY1-R1-433) could be inserted on the back side of the weather strip. After attaching the foam pad, the weather strip was to be pressed down (where the foam pad was installed) and the female wedge re-fitted.

As a production change, a pad was added to the area between the header weather-strip and the windscreen header panel.

Mazda NC MX-5: MIL and DTC P2407

In November 2006, Mazda USA issued service bulletin 01-037/06 for 2006-07 Mazda MX-5 vehicles that were manufactured before 7 August 2006 and had VINs preceding JM1 NC**** ** 126015. In these vehicles, the Malfunction Indicator Lamp (MIL) may illuminate and the Diagnostic Trouble Code (DTC) P2407 may be logged in memory – this may be due to abnormal current in the LDP sensor which exceeded the threshold of DTC P2407. Since the design specification did not meet the market need, the powertrain control module (PCM) software was changed to resolve the concern. The service bulletin described the procedure for updating the PCM.

Mazda NC MX-5: DTC P0455 and EVAP leak

In January 2007, Mazda USA issued service bulletin 01-001/07 for 2006-07 Mazda NC MX-5 vehicles that were manufactured from 6 January 2006 to 2 August 2006 and had VINs in the range JM1NC**F*60111723 to JM1NC**F*70125568. In these vehicles, the malfunction indicator light (MIL) may illuminate and the diagnostic trouble code (DTC) P0455 may be issued (‘EVAP System Leak Detected – Large Leak’) – this may occur due to poor sealing between the fuel filler pipe and the fuel filler cap. To fix, the fuel filler cap was to be replaced with a modified cap (part number FEY2-42-250).

Mazda NC MX-5 hard-top: windscreen header rattling

In October 2008, Mazda USA issued service bulletin 09-035/08 for 2007-08 Mazda NC MX-5 hard-top vehicles that were manufactured prior to 11 January 2008 and had VINs preceding JM1 NC**** ** 148630. In these vehicles, the windscreen header and roof panel may rattle while driving because of insufficient latching force between the top lock and striker – this was subsequently fixed as a production change. To fix, the service bulletin described a procedure to tighten the top lock adjustment nut by one turn.

Mazda NC MX-5: variable idle speed and stalling

In February 2009, Mazda USA issued service bulletin 01-007/09 for 2006-09 Mazda NC MX-5 vehicles because of variable idle speed and, in some rare cases, stalling after the vehicle had stopped. The service bulletin attributed this behaviour to the accumulation of carbon deposits inside the throttle body which caused air flow to decrease. To fix, the throttle body needed to be removed, cleaned and re-installed using a new gasket.

Mazda NC MX-5: squeaking seat

In October 2009, Mazda USA issued service bulletin 09-064/09 for 2006-10 Mazda NC MX-5 vehicles. In some of these vehicles, there may be a squeaking noise from the front seatback due to contact between the seat frame and seat frame spring. To fix,

• The headrest was to be removed;
• The seat trim and seatback pad were to be removed;
• Clamp B was to be widened to remove Spring A (see bulletin);
• Vinyl tape was to be wrapped around the clamped portion of the spring;
• The spring was to be fitted back into the clamp and the clamp squeezed to secure the spring; and,
• The seatback pad, seat trim and headrest were to be re-installed.

Mazda NC MX-5 soft-top: water in footwell

In October 2010, Mazda USA issued service bulletin 09-046/10 for the following Mazda NX MX-5 Soft-top vehicles:

• 2006-07 Mazda MX-5 soft-top vehicles manufactured prior to 20 November 2006 and with VINs preceding JM1NC****7*131735; and,
• 2007-09 Mazda MX-5 soft-top vehicles manufactured between 21 November 2006 and 1 March 2009, with VINs in the range JM1NC****7*131736 to JM1NC****9*203430.

In these vehicles, water may accumulate in the foot wells due to the soft-top drains becoming clogged with leaves and other debris. For vehicles with clogged drains, the drain assemblies were to be updated (see service bulletin 09-046/10).

As a result of these problems, the following production changes were implemented:

• A filter was added to the drain valve assembly to prevent leaves or other foreign substances from clogging the drain;
• Ribs were added to the upper and lower valves of the drain valve assembly to prevent eh valves (rubber flaps) from being forced out of position if compressed air was used to clear the drains from under the vehicle; and,
• A foam urethane filter was introduced for the drain cover.

Mazda NC MX-5: MIL and DTC P0601:00

In July 2013, Mazda USA issued service bulletin 01-018/13 for Mazda NC MX-5 vehicles that were manufactured from 23 July 2012 to 15 November 2012 and had VINs in the range JM1NC******226802 to JM1NC******228352. In these vehicles, the malfunction indicator light (MIL) may illuminate and diagnostic trouble code (DTC) P0601:00 (PCM memory check sum error) may be recorded when the accelerator is depressed just after deceleration and the transmission is in first gear. According to the service bulletin, this condition was caused by improper control logic of the powertrain control module (PCM) and, to fix the problem, the PCM was to be re-programmed.

Mazda NC MX-5: front-end clunk after take-off

In January 2014, Mazda USA issued service bulletin 04-022/14 for Mazda NC MX-5 vehicles because some owners experienced a slight clunk/bang/buzz noise or jolt from the front of the vehicle during the vehicle’s initial forward movement after starting the engine. As per the service bulletin, this noise was due to a normal “Malfunction Detection Function’ being performed by the Anti-Lock Brake System (ABS) and did not require repairs.

Mazda NC MX-5: differential noise

In September 2014, Mazda USA issued service bulletin 03-004/14 for 2006-13 Mazda MX-5 vehicles that were manufactured prior to 29 May 2013 and had VINs preceding JM1NC******233232. In these vehicles, the rear differential may emit a whining noise while the vehicle is being driven – this may be caused by improper tooth contact pattern of the rear differential gear as a result of abnormal wear. The abnormal wear was attributed to more gear tooth lapping compound (used during production) being left on the differential gear than allowed. To fix, the rear differential was to be replaced.

Production control methods were subsequently improved to reduce the amount of remaining lapping compound.

Mazda NC MX-5: Other problems and faults

• Squealing noises from the front brakes under light braking pressure may be fixed by installing a revised brake pad guide.
• Poor AM radio reception may be due to static electricity discharge damaging the AM signal amplifier at the antenna.

Overview

Manufacturers, or importers, issue recalls for defects or faults which have the potential to cause injury. Generally, manufacturers will inform the original buyers if their vehicle is subject to a recall and of the steps required to remedy the defect or fault. Please note that the recalls below (if any) are for Australian-delivered vehicles only. Furthermore, the number of recalls should not be taken as an indication of a model’s reliability or its safety more generally.

Recalls: Mazda ND MX-5

2015-19 Mazda ND MX-5: automatic transmission downshift

In February 2019, recall campaign R201901 was issued for Mazda ND MX-5 vehicles that were available for sale in Australia from 20 July 2015 to 31 January 2019 and had automatic transmissions. In these vehicles, the Transmission Control Module (TCM) may incorrectly interpret an electrical signal from the gear selector – this could cause the automatic transmission to downshift unexpectedly, causing an abrupt wheel spin reduction. If this occurred, the stability of the vehicle may be affected and this increased the risk of injury for vehicle occupants and other road users. For the VINs of the recalled vehicles, please see PRA 2019/17325.

2015 Mazda ND MX-5: metal bracket for underbody cover could detach

In July 2019, recall campaign R201907 was issued for Mazda ND MX-5 vehicles that were available for sale in Australia from 27 May 2015 to 6 July 2014. In these vehicles, the metal bracket on the vehicle under cover could separate from the vehicle while it was being driven. The metal bracket may fall from the vehicle, increasing the risk of a collision or injury to vehicle occupants and other road users. For the VINs of the recalled vehicles, please see PRA 2019/17671.

2017-19 Mazda ND MX-5 vehicles: low pressure fuel pump could deform and cause stall

In December 2021, recall campaign R202104 was issued for 2017-19 Mazda ND MX-5 vehicles. The low pressure fuel pump impeller could become deformed and cause the fuel pump to stop working. This could cause the vehicle to stall and this loss of power while driving could increase the risk of a collision and injury to vehicle occupants and other road users. To fix, the low pressure fuel pump was to be replaced. For the VINs of the recalled vehicles, please see REC-005009.

Problems and faults: Mazda ND MX-5

Overview

This section identifies potential problems, causes and fixes based on the experiences of owners and repairers, online sources and technical service bulletins. This information is provided solely for reference purposes and AustralianCar.Reviews recommends that only properly qualified persons carry out repairs or modifications. Furthermore, the number of items below should not be taken as an indicator of a model’s reliability or the frequency with which they may occur.

To report a problem or fault to the AustralianCar.Reviews team, please use the Contact Us form. Note that AustralianCar.Reviews does not offer advice on automotive problems or disputes; such enquiries will not receive a reply. For vehicles purchased from dealers after 1 January 2011, please see our Australian Consumer Law fact sheet.

2015-16 Mazda ND MX-5 with manual transmission: damage to second and third gears

In October 2017, Mazda USA issued a technical service bulletin 05-001-17-3309c for 2016 and 2017 model year Mazda ND MX-5 vehicles that had manual transmissions; AustralianCar.Reviews understands that this corresponds to Mazda MX-5 vehicles manufactured prior to September 2017. According to the bulletin, these vehicles may exhibit the following symptoms:

• A grinding noise when the transmission was shifted from 1st to 2nd and/or from 2nd to 3rd gear or in the neutral position with the engine idling; and/or,
• It may be impossible to shift into 2nd and/or 3rd gear even though there was no problem shifting into other gears.

These symptoms were attributed to damage to the second and third gears that could be caused by rapid acceleration and deceleration that was accompanied by frequent shift changes. The ‘configuration’ of the second and third gears was subsequently changed – from serial number 6TJ0701679 – to increase their rigidity.

Mazda ND MX-5: clunking noise from rear suspension

In April 2017, Mazda issued a technical service bulletin for Mazda ND MX-5 vehicles because a clunking noise may be heard from the rear suspension when driving over road slopes or bumps. According to the service bulletin, this noise may be caused by the top two windings of the rear shock absorber coil spring interfering with one another and causing a stick-slip noise. To fix, a resin protector was to be fitted onto the coil spring.

Recalls: Mazda NB MX-5

Overview

Manufacturers, or importers, issue recalls for defects or faults which have the potential to cause injury. Generally, manufacturers will inform the original buyers if their vehicle is subject to a recall and of the steps required to remedy the defect or fault. Please note that the recalls below (if any) are for Australian-delivered vehicles only. Furthermore, the number of recalls should not be taken as an indication of a model’s reliability or its safety more generally.

Recalls: Mazda NB MX-5

• In July 2003, a recall was issued for Mazda NB MX-5 vehicles due to a potential fire hazard as the fog lamp bulb sockets could come adrift from their mountings – this could enable the globes to make contact with the inner portion of the front bumper bar (PRA 2003/6324).

Problems and faults: Mazda NB MX-5

Overview

This section identifies potential problems, causes and fixes based on the experiences of owners and repairers, online sources and technical service bulletins. This information is provided solely for reference purposes and AustralianCar.Reviews recommends that only properly qualified persons carry out repairs or modifications. Furthermore, the number of items below should not be taken as an indicator of a model’s reliability or the frequency with which they may occur.

To report a problem or fault to the AustralianCar.Reviews team, please use the Contact Us form. Note that AustralianCar.Reviews does not offer advice on automotive problems or disputes; such enquiries will not receive a reply. For vehicles purchased from dealers after 1 January 2011, please see our Australian Consumer Law fact sheet.

Mazda NB MX-5: clutch chatter on take-off

In September 2003, Mazda USA issued service bulletin 05-001/03 for Mazda NB MX-5 vehicles that had manual transmissions, were manufactured prior to 10 April 2003 and had VINs in the range JM1NB353*Z0000001 to JM1NB353***312323. These Mazda MX-5 vehicles may exhibit clutch chatter or judder when the clutch is released during cold conditions – this may be caused by the clutch surface materials creating a chatter or judder during clutch engagement. To fix,

• The transmission was to be removed;
• The clutch disc removed;
• The clutch cover and flywheel inspected;
• The clutch disc replaced (part number BP07-16-460D-9U); and,
• The transmission re-installed.

Mazda NB MX-5: Other problems and faults

• The MX-5’s cruise control may not hold a constant speed – instead increasing – or the deceleration feature may not work due to failed transistors in the control unit.
• For Mazda NB MX-5 early models, the bearing caps on some engines may not have been machined properly, causing a rattling noise from the engine bay and requiring a new block.
• Rattling noises from the muffler may be due to the inner shell vibrating; a revised, padded muffler was subsequently released.

Recalls: Mazda NA MX-5

Overview

Manufacturers, or importers, issue recalls for defects or faults which have the potential to cause injury. Generally, manufacturers will inform the original buyers if their vehicle is subject to a recall and of the steps required to remedy the defect or fault. Please note that the recalls below (if any) are for Australian-delivered vehicles only. Furthermore, the number of recalls should not be taken as an indication of a model’s reliability or its safety more generally.

Recalls: Mazda NA MX-5

No recall information is available for the Mazda NA MX-5. To search for recalls of Mazda models, please visit Product Safety Recalls Australia: Mazda.

Problems and faults: Mazda NA MX-5

Overview

This section identifies potential problems, causes and fixes based on the experiences of owners and repairers, online sources and technical service bulletins. This information is provided solely for reference purposes and AustralianCar.Reviews recommends that only properly qualified persons carry out repairs or modifications. Furthermore, the number of items below should not be taken as an indicator of a model’s reliability or the frequency with which they may occur.

To report a problem or fault to the AustralianCar.Reviews team, please use the Contact Us form. Note that AustralianCar.Reviews does not offer advice on automotive problems or disputes; such enquiries will not receive a reply. For vehicles purchased from dealers after 1 January 2011, please see our Australian Consumer Law fact sheet.

Problems and faults: Mazda NA MX-5

• Failed spark plugs are indicated by misfires – these are a routine replacement item.
• The MX-5’s cam belts must be replaced as scheduled.
• Oil leaks and noise from the lifters may indicate insufficient oil changes.
• For severe oil leaks, the crankshaft pulley may need to be removed.
• Worn synchros are most apparent when shifting into second gear.
• Worn or leaking clutch hydraulics may lead to premature clutch and gearbox wear.
• Dampers are a routine replacement item.

Released in March 1998, the Mazda NB Series I (NB.I) MX-5 was a two-door convertible, available with a soft-top or removable fibre-reinforced plastic (FRP) hardtop. Manufactured in Hiroshima, Japan, the rear-wheel drive NB.I MX-5 was powered by a 1.8-litre four-cylinder petrol engine that was initially mated to either a four-speed automatic or five-speed manual transmission. Limited-run 10th Anniversary and Heritage editions, however, were fitted with a six-speed manual transmission… Read full Mazda NB MX-5 review

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Images: Mazda NB.II MX-5 (2000-02)

Released in October 2000, the Mazda NB Series II (NB.II) MX-5 introduced a new 1.8-litre BP-ZE engine, stiffer chadswas and a six-speed manual transmission. In January 2002, the turbocharged MX-5 SP was released and a four-speed automatic transmission was introduced for the standard MX-5. The Mazda NB.II MX-5 could be identified by its revised front bumper, slimmer headlights, fog lamps (incorporated into the air dam) and clear tail-lights. Inside, the steering wheel featured a Mazda logo, while the white-faced instruments had amber back lighting and chrome ring surrounds.

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Images: Mazda NB.III MX-5 (2002-03)

Released in October 2002, the NB Series III (NB.III) was a minor update for the MX-5 range, with the engines slightly detuned to comply with Euro III emission standards.

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Images: Mazda NB.IV (2003-05)

Released in November 2003, the NB Series IV (NB.IV) MX-5 introduced a number of minor updates. In 2004, the MX-5 range was expanded with the introduction of the turbocharged MX-5 SE.

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Released in September 2005, the Mazda NC Series I (NC.I) MX-5 was initially offered as a two-seat, soft-top convertible. Manufactured in Hiroshima, Japan, the rear-wheel drive MX-5 was powered by a 2.0-litre four-cylinder petrol engine – with variable valve timing – that was mated to either a six-speed manual or six-speed automatic transmission… Read full Mazda NC MX-5 review

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Images: Mazda NC.II MX-5 (2009-12)

Released in March 2009, the Mazda NC Series II (NC.II) MX-5 introduced a revised line-up, facelift and engine modifications. The 2.0-litre four-cylinder engine featured a new induction sound enhancer, forged crankshafts, valve springs and new connecting-rod bearings; as a result, it now had a 7500 rpm limit compared to its predecessor’s 7000 rpm. The Mazda NC.II MX-5 could be identified by its single front fascia bumper, five-point grille, new headlights, triangular front fog lamp bezels, garnished side sills, revised rear bumper and new rear combination lamps. Compared to the Soft-top, the Roadster Coupe was differentiated by its mesh grille, chrome finish inner headlight bezel, silver fog lamp surrounds and chrome door handles. Inside, the NC.II MX-5 featured a red-backlit LCD tripmeter/odometer, more supportive seat bolsters, silver-ringed climate control knobs and a soft-touch centre console cover.

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Images: Mazda NC.III MX-5 (2012-14)

Released in October 2012, the Mazda NC Series III (NC.III) MX-5 introduced a revised range as the soft-top models were discontinued. The Mazda NC.III MX-5 could be identified by its larger five-point grille and lighter front bumper, new front fog light bezels, front chin spoiler and gunmetal alloy wheels. Inside, matte dark silver finishes for decoration panels and steering wheel bezel were replaced with a glossy dark grey finish. Furthermore, greater refinement was also achieved through stiffer door modules, a urethane-filled front suspension cross member, a reinforced second cross member and additional damping material in the front-most section of the roof.

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