2020 Mazda 6: common problems and MOT failures

Common 2020 Mazda 6 MOT failures and advisories

The share of 2020 Mazda 6 MOT tests where testers flagged each area, as a fail or an advisory. Rough prices are typical independent-garage costs.

• Tyres
  22% 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.

• Brakes
  19% 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.

• 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
  2% of testsRough price £10–£80

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

• Seats and seatbelts
  2% of testsRough price £80–£250

  At the viewing: Pull each seatbelt sharply. It should lock, and retract cleanly.

• Suspension
  1% 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.

Known faults on the 2020 Mazda 6

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.

• Diesel in the oil (particulate filter)

  Diesel

  If the engine is switched off during particulate filter cleaning, fuel can get into the oil and raise the level, which can damage the engine.

  At the viewing: Check the oil isn’t above the max mark and ask what journeys it does.

  Source: What Car?: used Mazda 6 (2013-2022) reliability

• Airbag inflator and boot strut recalls

  All engines

  Driver’s airbag inflators can rupture after long exposure to humidity and must be replaced, and boot struts were recalled in 2017.

  At the viewing: Ask a Mazda dealer to confirm the recalls were done.

  Source: What Car?: used Mazda 6 (2013-2022) reliability

• Warped brake discs

  All engines

  It can be hard on its brake discs, causing vibration under braking.

  At the viewing: Brake firmly from speed and feel for shaking.

  Source: What Car?: used Mazda 6 (2013-2022) reliability

Questions to ask the seller before buying a 2020 Mazda 6

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

1. Does it do regular motorway runs?
2. Can I see the service history and receipts for any big jobs?