IsItAGoodCar
Reliability Guide

Common Problems with the
2021–2022 Citroën C4 (Mk3)

We've identified 4 known issues that can affect the 2021–2022 Citroën C4 (Mk3). 2 of these are serious faults that could be expensive to repair.

4
Known Issues
2
Serious
1
Moderate
1
Minor

All Known Issues

1.2 PureTech "Wet Belt" Degradation

SeriousEngine

The 1.2 petrol engine is subject to wet-belt degradation. Debris can block the oil pickup, leading to vacuum pump failure and a dangerous loss of braking assistance (Recall R/2020/331).

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

Low oil pressure warning, Hard brake pedal, Engine fault light

What to Inspect:
  • Check belt condition via oil filler cap
  • Verify service history for the correct oil specification
  • Check recall status
Verified by IsItAGoodCar Research Team

ë-C4 Traction Battery Software Fault

SeriousElectrics & Electronics

Early electric models were subject to a recall regarding the battery management software, which could cause a sudden loss of power while driving.

Est. Repair Cost: £0 (Recall)
Warning Signs:

"Electrical Circuit Fault" warning, Sudden loss of traction power, Vehicle entering limp mode without warning

What to Inspect:
  • Check recall history for "Quality Improvement Action NT2" or similar battery updates
Verified by IsItAGoodCar Research Team

Infotainment and Software "Gremlins"

ModerateElectrics & Electronics

The 10-inch touchscreen and digital driver display can suffer from freezing, random reboots, or lagging responses.

Est. Repair Cost: £0–£400
Warning Signs:

Screen goes black or freezes, Apple CarPlay/Android Auto fails to connect, Laggy response to climate controls

What to Inspect:
  • Test the touchscreen for responsiveness across all menus
  • Verify Bluetooth and smartphone mirroring stability
Verified by IsItAGoodCar Research Team

Premature Front Brake Wear

MinorBrakes

Some owners report that the front brake pads wear out significantly faster than expected, sometimes in as little as 18,000 miles.

Est. Repair Cost: £150–£300
Warning Signs:

Squealing sound when braking, Brake pad wear warning light, Grinding noise

What to Inspect:
  • Inspect brake pad thickness through the wheels
  • Check service history for recent brake work
Verified by IsItAGoodCar Research Team

Buying Tips for 2021–2022 Citroën C4 (Mk3)

  • On petrol models, verify the use of the correct 0W-30 or 0W-20 oil and check the timing belt condition through the filler cap.
  • Ensure all software recalls (especially for the ë-C4 battery management) have been completed.
  • Test the infotainment responsiveness; 2023+ models with "My Citroën Drive Plus" are significantly more stable.
20202023
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