2017 Mazda MX-5: common problems and MOT failures

What goes wrong more than usual on a 2017 Mazda MX-5?

Parts flagged at MOT more often on the 2017 Mazda MX-5 than on all cars registered in 2017.

• Other suspension bushes21× usual
  Mazda MX-5

  2.1% All 2017 cars

  0.1%

  Failed outright at MOT: 0.1%, against 0% of all 2017 cars. The rest were advisories or minor defects.

  Rough price £120–£400 our estimate

  At the viewing: Listen for knocks over speed bumps, and look behind each front wheel for a snapped coil spring.

Common 2017 Mazda MX-5 MOT failures and advisories

The share of 2017 Mazda MX-5 MOT tests where testers flagged each area, as a fail or an advisory. Rough prices are typical independent-garage costs.

• Brakes
  21% of testsRough price £150–£350

  At the viewing: Look for a lip on the disc edges and feel for judder or pulling when braking firmly from about 40mph.

• Tyres
  20% of testsRough price £70–£150

  At the viewing: Check the tread on all four tyres, including the inside edges, and look for cracks or bulges.

• Suspension
  9% of testsRough price £120–£400

  At the viewing: Listen for knocks over speed bumps, and look behind each front wheel for a snapped coil spring.

• Wipers, windscreen and mirrors
  6% of testsRough price £15–£250

  At the viewing: Check for chips in the driver's view, and test the wipers and washers.

• Lights and electrics
  5% of testsRough price £10–£80

  At the viewing: Ask a friend to check every light, including brake lights and indicators, while you operate them.

Known faults on the 2017 Mazda MX-5

Reported by owners, mechanics and buying guides for this model and age. Check which engine the car has, as some apply to one engine only.

• Stop-start fire risk (built May 2015 to Apr 2017)

  Built 2015 to 2017

  The i-ELOOP stop-start system on cars built 15 May 2015 to 13 April 2017 can overheat and, in extreme cases, catch fire. A dealer should check it and update the software.

  At the viewing: Ask a Mazda dealer to confirm the recall was done.

  Source: What Car?: used Mazda MX-5 (2015 on) reliability

• Automatic downshifting by itself (built Oct 2016 to Nov 2018)

  Automatic, built 2016 to 2018

  Automatics built 5 October 2016 to 22 November 2018 can change down without being asked. A software update fixes it.

  At the viewing: Ask for proof the update was done.

  Source: What Car?: used Mazda MX-5 (2015 on) reliability

Questions to ask the seller before buying a 2017 Mazda MX-5

Ask before you travel to see it. A seller who knows the car will have answers, and receipts.

1. Has the i-ELOOP recall been done?
2. Any recent work on the other suspension bushes? (Flagged at MOT 21× as often on the 2017 Mazda MX-5 as on other cars the same age.)
3. Can I see the service history and receipts for any big jobs?