EngineHigh
Wet belt wear on PureTech petrol engines
- Typically appears
- 60,000+ miles
- What to inspect
- Check belt history and oil condition
- Typical repair
- Timing / wet belt kit + water pump · £450–£1,100
Is the 2018–2025 Citroen C5 Aircross reliable?
Scored from 8 documented faults · reviewed by the VehicleFaults Research Team
Quick answer
3.9/ 10
Buy with cautionOn our documented-fault scoring the Citroen C5 Aircross rates 3.9 out of 10 · buy with caution. We hold 8 known faults for it and 3 are rated high severity, so the risk is real but contained. The weak points cluster around engine, transmission and electrical. A well-serviced example with evidence for the big-ticket items is usually a safe buy; the score describes the model, not the specific car in front of you.
Verdict · Walk unless the history is spotless
What the score is built from
- Critical
- 0
- High
- 3
- Medium
- 5
- Low
- 0
Weak points cluster around engine, transmission, electrical, suspension.
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EmissionsHigh
Emissions Fault warning on dash and non-start countdown caused by AdBlue injector crystallisation or urea tank pump failure on BlueHDi models.
- Typically appears
- 40,000-70,000 miles
- What to inspect
- Turn the ignition on and check the instrument cluster for urea or engine warning lights. Scroll through the vehicle message menu to ensure no AdBlue countdown is active.
- Typical repair
- Injector set replacement & coding · £500–£1,600
Hybrid SystemHigh
Onboard charger (OBC) failure on PHEV models prevents the vehicle from accepting a charge, often indicated by a red flashing light at the port.
- Typically appears
- 3-5 years
- What to inspect
- Plug the vehicle into a forecourt wallbox or 3-pin granny charger. Verify the LED at the charge port turns solid green and the dashboard confirms active charging.
- Typical repair
- Charging / power electronics repair · £600–£2,600
TransmissionMedium
EAT8 gearbox software and shift quality faults
- Typically appears
- 70,000+ miles
- What to inspect
- Drive it hot and cold checking shifts
- Typical repair
- Infotainment repair or software fix · £120–£1,200
ElectricalMedium
Touchscreen freezes and connectivity faults
- Typically appears
- Age-related
- What to inspect
- Test the screen and phone mirroring
- Typical repair
- Infotainment repair or software fix · £120–£1,200
Costs are indicative UK independent-garage bands for budgeting and negotiation · never a quote.
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