2017 DS 3 diesel: common problems and MOT failures

What goes wrong more than usual on a 2017 DS 3 diesel?

Parts flagged at MOT more often on the 2017 DS 3 diesel than on all cars registered in 2017.

• Brake discs2.3× usual
  DS 3

  24.8% All 2017 cars

  10.9%

  Failed outright at MOT: 2.2%, against 0.7% of all 2017 cars. The rest were advisories or minor defects.

  Rough price £150–£350 our estimate

  At the viewing: Look through the wheel at the brake disc: a deep lip at the edge or heavy scoring means they're worn. Feel for judder when braking.

• Exhaust system12.3× usual
  DS 3

  14.7% All 2017 cars

  1.2%

  Failed outright at MOT: 2.4%, against 0.3% of all 2017 cars. The rest were advisories or minor defects.

  Rough price £100–£500 (pipe or section) ClickMechanic

  At the viewing: Listen for blowing or rattling from underneath at idle, and look for black soot around joints.

• Drive shaft (CV) joints8× usual
  DS 3

  8.8% All 2017 cars

  1.1%

  Failed outright at MOT: 7.2%, against 0.6% of all 2017 cars. The rest were advisories or minor defects.

  Rough price £60–£350 our estimate

  At the viewing: Drive slowly on full steering lock in both directions and listen for clicking. Look for split rubber boots behind the front wheels.

• Braking performance3.3× usual
  DS 3

  5.2% All 2017 cars

  1.6%

  Failed outright at MOT: 1.5%, against 0.5% of all 2017 cars. The rest were advisories or minor defects.

  Rough price £100–£350 our estimate

  At the viewing: On a quiet road, brake firmly from about 30mph. The car should stop straight without pulling.

• Sidelights5.4× usual
  DS 3

  4.3% All 2017 cars

  0.8%

  Failed outright at MOT: 4.2%, against 0.7% of all 2017 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 2017 DS 3 diesel MOT failures and advisories

The share of 2017 DS 3 diesel MOT tests where testers flagged each area, as a fail or an advisory. Rough prices are typical independent-garage costs.

• Tyres
  35% 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
  31% 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
  17% 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
  16% of testsRough price £10–£80

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

• Exhaust and emissions
  15% of testsRough price £100–£1,200

  At the viewing: Look for black soot in the tailpipe, listen for blowing from the exhaust and check for engine or DPF warning lights.

• Driveshafts and joints
  9% of testsRough price £60–£350

  At the viewing: On full steering lock, drive slowly and listen for clicking from the front wheels.

Questions to ask the seller before buying a 2017 DS 3 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 brake discs? (Flagged at MOT 2.3× as often on the 2017 DS 3 diesel as on other cars the same age.)
2. Any recent work on the exhaust system? (Flagged at MOT 12.3× as often on the 2017 DS 3 diesel as on other cars the same age.)
3. Any recent work on the drive shaft (cv) joints? (Flagged at MOT 8× as often on the 2017 DS 3 diesel as on other cars the same age.)
4. Can I see the service history and receipts for any big jobs?