Citroën C4 1
Weaknesses, engine ratings and buying advice
140–211 PS
1.6L THP Benzin
Punchy turbo compact
Fun to Drive!140–211 PS
1.6L THP Benzin
7 weaknesses
Stay Away!Generations
Engine Overview
The Citroën C4 1 is available with 8 engine variants — from 75 to 211 hp. 2 variants had engine changes — the model year is crucial.
The Citroën 1.6L HDi 109 (Diesel, 109–111 PS) has the DV6-109 (1.6L HDi 109) — rated: "Stay Away!", 6 known weaknesses.
The Citroën 1.6L HDi 92 (Diesel, 90–92 PS) has the DV6-92 (1.6L HDi 92) — rated: "Stay Away!", 6 known weaknesses.
The Citroën 2.0L HDi 109 (Diesel, 109 PS) has the DW10-109 (2.0L HDi 109) — rated: "Stay Away!", 6 known weaknesses.
The Citroën 2.0L HDi 136 (Diesel, 136–140 PS) has the DW10-136 (2.0L HDi 136) — rated: "Stay Away!", 6 known weaknesses.
The Citroën 1.6L 16V (Petrol, 109 PS) has the TU5 (1.6L 16V) — rated: "Be Careful", 5 known weaknesses.
The Citroën 1.6L THP (Petrol, 140–156 PS) comes with 2 different engines: EP6-THP (2008–2010, Stay Away!) and EP6-THP (2008–2010, Stay Away!). Pay attention to the model year for the 1.6L THP!
The Citroën 1.6L VTi (Petrol, 120 PS) has the EP6-VTi (1.6L VTi) — rated: "Stay Away!", 6 known weaknesses.
The Citroën 2.0L 16V (Petrol, 136–177 PS) comes with 2 different engines: EW10 (2004–2010, Be Careful) and EW10 (2004–2009, Be Careful). Pay attention to the model year for the 2.0L 16V!
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Vehicle Weaknesses
| Weakness | Cost | |
|---|---|---|
| BSI control unit failure and communication faults The BSI (Body Systems Interface) on the C4 I is known for sporadic failures that lead to total failure of multiple vehicle systems. Moisture ingress into connectors promotes corrosion. Symptoms: Multiple warning lights simultaneously, central locking unresponsive, vehicle will not start, instrument cluster showing faults from 100,000 km | Medium | |
| Battery problem and starting failure According to ADAC breakdown statistics, the C4 I is frequently flagged for flat batteries and failed starters. Permanent consumers in the standby current circuit can discharge the battery unnoticed. Symptoms: Vehicle will not start in the morning, instrument cluster warning, electrical problems after cold start, starter cranks slowly from 80,000 km | Low | |
| Headlight malfunction and adjustment faults According to MOT statistics, headlights on the C4 I are one of the most frequently flagged items. Both low beam and tail lights are affected by failures and misadjustment. Symptoms: Headlights illuminating at different brightness left/right, instrument cluster warning, MOT rejection due to headlight adjustment from 70,000 km | Low |
Alternatives
Known Problems and Issues
A total of 54 weaknesses have been documented for the Citroën C4 1 (2004–2010) — 48 engine-related and 6 vehicle-related. 6 problem engines: EP6-VTi (1.6L VTi), EP6-THP (1.6L THP), DV6-92 (1.6L HDi 92), DV6-109 (1.6L HDi 109), DW10-109 (2.0L HDi 109), DW10-136 (2.0L HDi 136). Typical issues affect Electronics, Brakes, Suspension, Rust.
C4 (DV6-92, 2004–2010) — Stay Away!: VNT turbo: vanes seized by oil coke, Injectors leaking — oil and fuel contaminate turbo, EGR valve blocked: limp mode and starting difficulties. Power: 90–92 PS.
C4 (DV6-109, 2004–2010) — Stay Away!: VNT turbocharger: vanes seized — most common failure, Injectors seized — cylinder head damage possible, EGR cooler leaking — coolant ingress. Power: 109–111 PS.
C4 (DW10-109, 2004–2010) — Stay Away!: Timing belt — critical replacement intervals, High-pressure pump — internal abrasion, VGT turbocharger — actuator and vanes. Power: 109 PS.
C4 (DW10-136, 2004–2010) — Stay Away!: Timing belt — interference engine, high risk of engine damage, Common rail injectors — leakage and wear, Dual-mass flywheel — premature wear from 80,000 km. Power: 136–140 PS.
C4 (TU5, 2004–2010) — Be Careful: Timing belt snap with engine damage, Timing belt tensioner failure — belt failure possible, Elevated oil consumption from piston ring wear. Power: 109 PS.
C4 (EW10, 2004–2010) — Be Careful: Timing belt snap — interference engine, Head gasket — oil/coolant mixing, Water pump failure. Power: 136–140 PS.
C4 (EW10, 2004–2009) — Be Careful: Timing belt snap — interference engine, Head gasket — oil/coolant mixing, Water pump failure. Power: 177 PS.
C4 (EP6-VTi, 2008–2010) — Stay Away!: Timing chain rattle due to tensioner wear, Chain tensioner failure — timing chain rattles, Torn oil separator diaphragm in valve cover. Power: 120 PS.
C4 (EP6-THP, 2008–2010) — Stay Away!: Timing chain stretch and camshaft sprocket slippage, Extreme oil consumption from piston ring and valve stem seal wear, Turbocharger failure due to oil supply problems. Power: 150–156 PS.
C4 (EP6-THP, 2008–2012) — Stay Away!: Timing chain stretch and camshaft sprocket slippage, Extreme oil consumption from piston ring and valve stem seal wear, Turbocharger failure due to oil supply problems. Power: 140 PS.
What to watch out for with the Citroën C4? See the detailed listing of all engine and vehicle weaknesses in the sections above.
Frequently Asked Questions
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Last updated: February 2026 · All information without guarantee