2020 Fiat Doblo diesel: common problems and MOT failures

What goes wrong more than usual on a 2020 Fiat Doblo diesel?

Parts flagged at MOT more often on the 2020 Fiat Doblo diesel than on all cars registered in 2020.

• Engine warning light10.5× usual
  Fiat Doblo

  6.3% All 2020 cars

  0.6%

  Failed outright at MOT: 6.3%, against 0.6% of all 2020 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.

• Coil springs27.5× usual
  Fiat Doblo

  5.5% All 2020 cars

  0.2%

  Failed outright at MOT: 5.4%, against 0.2% of all 2020 cars. The rest were advisories or minor defects.

  Rough price £175–£400 (pair, one axle) ClickMechanic

  At the viewing: Look behind each wheel for a snapped spring coil, and listen for a clunk or twang when turning the wheel lock to lock with the car stopped.

• Windscreen3.8× usual
  Fiat Doblo

  6.1% All 2020 cars

  1.6%

  Failed outright at MOT: 0.3%, against 0.1% of all 2020 cars. The rest were advisories or minor defects.

  Rough price £60–£300 our estimate

  At the viewing: Check for chips or cracks in the driver's view.

• Pedal27× usual
  Fiat Doblo

  2.7% All 2020 cars

  0.1%

  Failed outright at MOT: 2.5%, against 0% of all 2020 cars. The rest were advisories or minor defects.

  Rough price £150–£350 our estimate

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

• Side repeaters11.5× usual
  Fiat Doblo

  2.3% All 2020 cars

  0.2%

  Failed outright at MOT: 0.6%, against 0.1% of all 2020 cars. The rest were advisories or minor defects.

  Rough price £10–£80 our estimate

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

Common 2020 Fiat Doblo diesel MOT failures and advisories

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

• Tyres
  27% 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
  17% 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
  12% 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
  12% 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
  9% of testsRough price £15–£250

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

• Oil and fluid leaks
  3% of testsRough price £80–£600

  At the viewing: Look under the engine and on the ground where the car is usually parked for fresh oil or fluid.

Questions to ask the seller before buying a 2020 Fiat Doblo diesel

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

1. Any recent work on the engine warning light? (Flagged at MOT 10.5× as often on the 2020 Fiat Doblo diesel as on other cars the same age.)
2. Any recent work on the coil springs? (Flagged at MOT 27.5× as often on the 2020 Fiat Doblo diesel as on other cars the same age.)
3. Any recent work on the windscreen? (Flagged at MOT 3.8× as often on the 2020 Fiat Doblo diesel as on other cars the same age.)
4. Can I see the service history and receipts for any big jobs?