IsItAGoodCar
Reliability Guide

Common Problems with the
2020–2021 DS Automobiles DS 3 Crossback / DS 3

We've identified 2 known issues that can affect the 2020–2021 DS Automobiles DS 3 Crossback / DS 3. 2 of these are serious faults that could be expensive to repair.

2
Known Issues
2
Serious
0
Moderate
0
Minor

All Known Issues

1.2 PureTech "Wet Belt" Degradation

SeriousEngine

The timing belt runs in oil and can degrade, shedding debris that blocks the oil pickup and can lead to vacuum pump failure (affecting braking assistance) and total engine failure.

Est. Repair Cost: £600–£1,800
Warning Signs:

Low oil pressure warning, Furry/cracked belt visible through filler cap, Hard brake pedal, Engine fault light

What to Inspect:
  • Check belt condition via oil filler cap
  • Verify 0W-30/0W-20 oil usage
  • Check recall history
Verified by IsItAGoodCar Research Team

AdBlue System Faults

SeriousExhaust & Emissions

BlueHDi diesel models frequently suffer from AdBlue tank deformation or injector crystallisation, often requiring a complete tank replacement.

Est. Repair Cost: £800–£1,500
Warning Signs:

Emissions warning light, AdBlue countdown timer, Engine won't start message

What to Inspect:
  • Service records for tank replacement
  • Warning lights on dash
  • AdBlue fluid quality
Verified by IsItAGoodCar Research Team

Buying Tips for 2020–2021 DS Automobiles DS 3 Crossback / DS 3

  • ✓Test the flush door handles repeatedly; they are known to stick or fail to present themselves, especially in freezing weather.
  • ✓Check the operation of the diamond-shaped interior touch-sensitive buttons, which can be unresponsive or glitchy.
  • ✓On the E-Tense EV model, verify the real-world range, as the relatively small battery degrades slightly over time.
  • ✓Inspect the rear cabin for dampness; the small rear windows and complex door seals can sometimes allow water ingress.
  • ✓Verify that the 1.2 PureTech petrol engines have a full service history to mitigate the known wet timing belt degradation issues.
  • ✓Check the alloy wheels for curbing; the car’s poor rearward visibility makes it challenging to park tightly without the camera.
20192022
Check a 2020–2021 DS Automobiles DS 3 Crossback / DS 3 by Registration