Citroën C4
Modern 1.5-litre diesel from the Stellantis era with SCR cat and DPF. Economical and clean, a good replacement for the 1.6 HDi. Belt-driven timing.
Utility diesel
100 hp BlueHDi in the Berlingo — just the right size: enough power for loaded trips, economical day-to-day.
Engine Weaknesses 6
The DV5-100 was initially shipped with a 7 mm wide timing chain that stretches prematurely and can snap under short-trip use and fuel dilution of the oil. Stellantis recalled over 141,700 vehicles and upgraded to a stronger 8 mm chain.
Symptoms: Clattering rattle on cold start (chain tensioner), sudden engine stall, engine warning light, no restart
The Bosch high-pressure fuel pump on the DV5-100 can seize due to a design fault. Metal particles then contaminate the entire fuel circuit; injectors and fuel tank must be completely replaced. Damage often occurs below 50,000 km.
Symptoms: Hesitation and stumbling under load, engine misfires, no or difficult restart, engine warning light
The DV5-100 shares the PSA-wide AdBlue tank problem: the integrated level sensor fails and the tank cannot be repaired individually. In winter the urea solution crystallises and additionally blocks pump and lines.
Symptoms: AdBlue warning message, countdown to starter lockout, implausible range display
During DPF regeneration, post-injection fuel is sprayed in; some passes the cylinder walls into the engine oil. With frequent short trips the oil dilutes heavily, the oil level appears to rise. Bearing and turbo damage may follow. Stellantis offers extended goodwill coverage of 10 years/240,000 km.
Symptoms: Significantly rising oil level (oil smells of diesel), frequent DPF regeneration cycles, knocking noises after long urban driving, increased oil consumption.
The DV5-100 regenerates every 40–70 km in heavy urban use, far more often than normal. This noticeably increases fuel consumption, and fuel dilution of the oil significantly accelerates wear of the timing chain and bearings.
Symptoms: Sharply elevated fuel consumption, rising oil level, frequent brief smoke from exhaust, DPF warning message
The PSA AdBlue pump weakness also affects the DV5: the pump PCB corrodes, urea crystallises in the system and blocks the injector or tank. P20EE or P20E8 is the most common fault code. Repair costs up to €2,000.
Symptoms: Exhaust aftertreatment warning light, countdown to engine lockout, abnormal ammonia smell from the exhaust, fault codes P20E8/P20EE, vehicle will not start after reaching the limit.
Vehicle Weaknesses 4
A recall was issued for the C4 III because rear axle springs can detach and fall off. This presents a significant safety risk for other road users.
Citroën issued a recall for the ë-C4 III because the high-voltage wiring harness presents an elevated fire risk. Affects the electric variant of the C4 III; immediate workshop inspection required.
The infotainment system on the C4 III shows occasional software bugs and dropped connections. Smartphone pairing fails, and the system freezes. Remote functions of the app work unreliably.
Several owners report unexpected suspension noises when going over road irregularities. Over severe potholes the damping can bottom out and transmit unpleasant impacts into the body.
