IsItAGoodCar

Common Problems with the
2018–2024 Citroën C5 Aircross

We've identified 3 known issues that can affect the 2018–2024 Citroën C5 Aircross. 2 of these are serious faults that could be expensive to repair.

3
Known Issues
2
Serious
0
Moderate
1
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. This leads to oil starvation, vacuum pump failure, and a dangerous loss of braking assistance (Recall R/2020/331).

Most affected: 1.2 PureTech 130

Estimated cost: £600–£1,800Affects: 2018–2024Often appears around: 30,000–60,000 miles

Typical symptoms

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

What to inspect before you buy

  • ✓Check belt condition via oil filler cap
  • ✓Verify 0W-30/0W-20 oil usage
  • ✓Check recall status

AdBlue Tank and Pump Failure (BlueHDi)

SeriousFuel System

Urea crystallisation can cause the AdBlue pump or injector to fail, typically requiring a complete tank replacement.

Most affected: 1.5 BlueHDi, 2.0 BlueHDi

Estimated cost: £800–£1,300Affects: 2018–2024Often appears around: 40,000–90,000 miles

Typical symptoms

  • •"UREA" or engine warning light
  • •"Starting impossible" countdown
  • •Anti-pollution fault

What to inspect before you buy

  • ✓Ask if the owner has used AdBlue anti-crystallisation additives
  • ✓Check for emissions-related warning lights

Infotainment and Connectivity Glitches

MinorElectrics & Electronics

The central touchscreen can be prone to freezing, lagging, or failing to connect to smartphones.

Most affected: Feel, Flair, Flair Plus

Estimated cost: £0–£200Affects: 2018–2024

Typical symptoms

  • •Touchscreen freezes or reboots
  • •Bluetooth pairing fails
  • •Apple CarPlay/Android Auto drops out

What to inspect before you buy

  • ✓Test all infotainment features and smartphone connectivity

Buying Tips for the 2018 Citroën C5 Aircross

  • ✓The 1.2 PureTech MUST have proof of the correct oil type to prevent timing belt (wet belt) failure.
  • ✓Check BlueHDi models for any "UREA" or emissions warning lights.
  • ✓Test the powered tailgate (if fitted) for smooth operation, as sensors can be temperamental.

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Other Citroën C5 Aircross Year Periods

2018–2024

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