KNOWN FAULTS · Citroën

Known faults for the Citroën C4 Aircross.

2012–2017 · Petrol / Diesel

Sources are not verified in real time and no entry confirms that your car is affected.

2 known faults with sources

Engines: 1.6 (Petrol)

Sticking piston rings, oil consumption and timing chain on the Mitsubishi 1.6 (4A92)Engine

Engine / equipment: Mitsubishi 117 hp 1.6 petrol (4A92): Citroën C4 Aircross and Peugeot 4008 (also the Mitsubishi ASX)
Period mentioned: 2012–2017
Symptoms: Oil has to be topped up between changes; bluish smoke; chain rattle on cold starts.
Possible cause described: Russia’s Za Rulem magazine (2021) rates the 4A92 the least successful engine of the range: the piston rings tend to stick from as early as about 80,000 km, which raises oil consumption; the timing chain can stretch beyond 100,000 km, and the engine is very sensitive to the oil level, which should be kept at least halfway up the dipstick.
Check for the garage: Measure oil consumption between changes and check the level often; listen for the chain on a cold start; ask for the oil-change history.
Cost cited in the source: No verified estimate; ask the garage for a quote.A rough figure from the original database, not an up-to-date quote.

Engines: 1.6 / 1.8 HDi (Diesel)

Applies if: Only the 1.6 HDi (DV6); the 1.8 HDi is a Mitsubishi engine.

Turbo oil starvation from injector carbonTurbo / injection

Engine / equipment: 1.6 HDi DV6 (Peugeot 207/308/3008/Partner, Citroën C3/C4/Berlingo; same engine as the Ford 1.6 TDCi)
Period mentioned: Approx. 2004–2015
Symptoms: Loud turbo whistle, power loss, blue or black smoke, oil that gets dirty very quickly. Before the failure, often a puffing or ticking from the cylinder head and an exhaust smell from an injector.
Possible cause described: The injector clamp bolts work loose, the gas leak forms carbon that gets into the oil and clogs the mesh filter in the banjo bolt feeding the turbo. The turbo is starved of oil. Replacing only the turbo does not fix it.
Check for the garage: Check injector bolt torque and carbon at their base, the turbo banjo bolt and the sump strainer.
Cost cited in the source: Turbo + full oil system cleaning: approx. €900–2,000 (estimate)A rough figure from the original database, not an up-to-date quote.