2016 Mercedes-Benz A-Class: common problems and MOT failures

What goes wrong more than usual on a 2016 Mercedes-Benz A-Class?

Parts flagged at MOT more often on the 2016 Mercedes-Benz A-Class than on all cars registered in 2016.

• Link ball joint covers6.4× usual
  Mercedes-Benz A-Class

  3.2% All 2016 cars

  0.5%

  Failed outright at MOT: 1.5%, against 0.3% of all 2016 cars. The rest were advisories or minor defects.

  Rough price £60–£150 (one joint) ClickMechanic

  At the viewing: Listen for knocking over bumps and check the rubber boots behind the wheels aren't split.

• Wheels2× usual
  Mercedes-Benz A-Class

  2% All 2016 cars

  1%

  Failed outright at MOT: 0.7%, against 0.3% of all 2016 cars. The rest were advisories or minor defects.

  Rough price £70–£150 our estimate

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

• Engine warning light1.6× usual
  Mercedes-Benz A-Class

  2.1% All 2016 cars

  1.3%

  Failed outright at MOT: 2.1%, against 1.3% of all 2016 cars. The rest were advisories or minor defects.

  Rough price £10–£80 our estimate

  At the viewing: Ask a friend to check every light while you work the switches: indicators, brake lights, fog lights and reversing lights.

Common 2016 Mercedes-Benz A-Class MOT failures and advisories

The share of 2016 Mercedes-Benz A-Class MOT tests where testers flagged each area, as a fail or an advisory. Rough prices are typical independent-garage costs.

• Tyres
  33% 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
  22% 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.

• Suspension
  11% 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.

• Lights and electrics
  8% of testsRough price £10–£80

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

• 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.

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

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

Known faults on the 2016 Mercedes-Benz A-Class

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.

• Oil leak and engine recalls

  All engines

  Recalls covered engine oil leaks and a fault that could cause engine failure.

  At the viewing: Look for oil under the car and around the engine, and ask a Mercedes dealer to check the VIN.

  Source: Carbuyer: used Mercedes A-Class Mk3 reliability

• Driveshaft recall

  All engines

  A 2015 recall covered the driveshafts.

  At the viewing: Listen for clicking on full lock and feel for vibration when accelerating.

  Source: Carbuyer: used Mercedes A-Class Mk3 reliability

• Electrical faults and rattles

  All engines

  Electrical issues were the top owner complaint, and early cars had seatbelt and dashboard rattles.

  At the viewing: Test every electric function and listen for rattles over bumps.

  Source: Carbuyer: used Mercedes A-Class Mk3 reliability

Questions to ask the seller before buying a 2016 Mercedes-Benz A-Class

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

1. Has all the recall work been done?
2. Has the driveshaft recall been done?
3. Have there been any electrical faults?
4. Any recent work on the link ball joint covers? (Flagged at MOT 6.4× as often on the 2016 Mercedes-Benz A-Class as on other cars the same age.)
5. Any recent work on the wheels? (Flagged at MOT 2× as often on the 2016 Mercedes-Benz A-Class as on other cars the same age.)
6. Any recent work on the engine warning light? (Flagged at MOT 1.6× as often on the 2016 Mercedes-Benz A-Class as on other cars the same age.)