Home / Makes / Citroen / C4 Known Faults Database Citroen C4 Common Problems & Known Faults (UK) If you are considering buying a used Citroen C4, there are several major reliability issues worth knowing about first. Our garage database tracks 4 known faults for this model, 3 of them rated high severity. Every one below is a repair bill a seller has good reason not to mention.
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Citroen C4 2014-2022 Models (2014-2022) problems Engine/Emissions High severity 📝 Editorial
AdBlue tank integrated pump failure due to crystallization or PCB contamination, requiring full tank replacement Typical symptoms AdBlue/UREA warning light engine management light countdown indicating 'Engine Will Not Restart in X miles' Affected vehicles
Engines: 1.5 & 1.6 BlueHDi
Typical mileage: 40000-80000 miles Citroen C4 2017-2023 Models (2017-2023) problems Engine/Emissions High severity 📝 Editorial
Premature stretching and snapping of the 7mm camshaft timing chain, destroying the engine top-end Typical symptoms loud ticking or rattling from top of engine sudden loss of power and engine stop non-start Affected vehicles
Engines: 1.5 BlueHDi (DV5)
Typical mileage: 50000-90000 miles Citroen C4 2009-2018 Models (2009-2018) problems Engine/Emissions High severity 📝 Editorial
1.6 THP (Prince) timing chain stretch and hydraulic tensioner failure causing 'death rattle' and timing jump Typical symptoms loud metallic 'death rattle' on cold start engine management light (cam timing codes) limp mode Affected vehicles
Engines: 1.6 THP (Petrol)
Typical mileage: 40000-80000 miles Citroen C4 1998-2013 Models (1998-2013) problems Transmission/Clutch Medium severity 💬 Owner reports
AL4 / DPO 4-speed automatic gearbox pressure regulation solenoid failure causing limp mode Typical symptoms Gearbox Fault warning and Sport/Snow lights flashing gearbox thumping or banging into gear stuck in 3rd gear (limp mode) Affected vehicles
Engines: All AL4 Automatics
Typical mileage: 60000-100000 miles Repair costs are typical UK ranges, not quotes. Actual cost depends on condition and garage. Data last verified: June 2026