EngineCritical
1.2 PureTech wet belt degradation
- Typically appears
- 60,000+ miles or 6 years
- What to inspect
- Demand belt evidence and inspect the oil
2014–2025 Citroen C4 · common problems & known faults
A comfort-focused family hatch, now including the electric e-C4. Stellantis engine checks apply throughout.
Compiled & reviewed by the VehicleFaults Research Team · last reviewed August 2026
Quick answer
The most commonly reported faults on the 2014–2025 Citroen C4 are 1.2 PureTech wet belt degradation, BlueHDi DPF and AdBlue faults and e-C4 battery health and charging behaviour. Of the documented issues, 1 rated critical and 4 rated high · these are the ones worth inspecting first. Full inspection points, onset mileage and what to check are listed below.
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Build the inspection planReliability snapshot
Based on the documented faults on this page for the Citroen C4.
2.0/ 10
- Critical
- 1
- High
- 4
- Medium
- 3
- Low
- 0
Guidance only · reflects reported patterns, not a specific car's condition.
Known faults to check
ExhaustHigh
BlueHDi DPF and AdBlue faults
- Typically appears
- 70,000+ miles
- What to inspect
- Check AdBlue warnings and regen history
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Build the inspection planElectricalMedium
Infotainment and sensor faults
- Typically appears
- Age-related
- What to inspect
- Test screen, sensors and camera
BatteryHigh
e-C4 battery health and charging behaviour
- Typically appears
- Any
- What to inspect
- Run a state-of-health check and test both charging modes
SuspensionMedium
Knocking over bumps or visible fluid weeping from the Progressive Hydraulic Cushion shock absorbers.
- Typically appears
- 40,000-60,000 miles
- What to inspect
- Bounce each corner firmly to listen for knocking, and visually inspect the damper bodies behind the wheels for oil misting.
TransmissionHigh
Severe juddering when pulling away or delayed engagement in first gear and reverse on ETG6 automated manuals.
- Typically appears
- 50,000-70,000 miles
- What to inspect
- Perform a series of slow-speed forward and reverse manoeuvres on the forecourt, feeling for clutch slip, hesitation, or violent judder.
EngineHigh
Rattling noise from the top of the engine on 1.5 BlueHDi (DV5) models due to internal camshaft chain stretching.
- Typically appears
- 60,000-80,000 miles
- What to inspect
- Start the engine from cold and listen closely to the top end (cam cover area) for a distinct metallic rattle before oil pressure builds.
HVACMedium
Cabin heater blows cold on the passenger side while blowing warm on the driver's side due to a blocked heater matrix.
- Typically appears
- 5-7 years
- What to inspect
- Set the climate control to maximum heat on both zones, run the engine to temperature, and check the vents for uneven temperature distribution.
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Build my inspection planFrequently asked questions
Is the C4 easy to retail?
Yes on comfort and equipment, provided you can evidence the wet belt on petrol cars.
What about the e-C4?
Treat it like any used EV: battery health report, both cables, and a rapid charge test.
Who is the buyer?
Comfort-focused private buyers and downsizers who prioritise ride quality over handling.
Do the Progressive Hydraulic Cushion dampers require specialist servicing?
No. Despite the complex name, these are passive shock absorbers with secondary hydraulic bump stops built inside. They do not use pumps, spheres, or central hydraulic fluid like classic Citroens. They are replaced as complete, sealed units just like standard MacPherson struts, requiring no specialist dealer tools to swap.
Which is more reliable for stock: the older 1.6 BlueHDi or the newer 1.5 BlueHDi?
The older 1.6 unit is generally more robust mechanically, provided its service history is flawless. The newer 1.5 introduced from 2018 offers better emissions and refinement but suffers from a well-documented internal camshaft chain weakness. Early 1.5 units with the 7mm chain are particularly high-risk for valvetrain failure.
How do I identify which automatic transmission is fitted to a C4?
Older Mk2 models often feature the ETG6 automated manual, identifiable by a small gear selector and distinct hesitation during shifts. Later Mk2s and all Mk3 automatics use the EAT8, a traditional torque converter built by Aisin. The EAT8 uses a flush toggle switch on the centre console and shifts seamlessly.
Sources & further reading
Faults are compiled from documented recalls, technical bulletins, owner reports and mechanic sources, then reviewed for accuracy. This is guidance only · not a substitute for a professional inspection.
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