Citroen C4 2006

🚨 What to check before buying

Overall risk score: 10/10

Serious risks

• Timing belt (critical): Belt every 80-100k km. Interference engine — belt failure destroys valves.
• Ignition coil failure: Coil pack can fail causing misfires. Single coil pack for all 4 cylinders is cheap to replace.
• Throttle body fouling: Throttle body accumulates carbon, causing erratic idle speed. Cleaning restores normal operation.
• Car is 20 years old — expect age-related wear: rubber seals, bushings, water pump, AC compressor
• Higher mileage (181,778 km) — check for timing system condition, turbo health, and suspension wear

Additional notes

• Vehicle is 15+ years old. Age-related issues: rubber seals/hoses degrade, electrical connectors corrode, suspension bushings wear. Not specific to any engine, but expect €500-1,500/year in age-related maintenance beyond normal service items.
• PSA/BMW EP6 (N14) 1.6 turbo has well-documented timing chain issues. Chain stretches causing timing jump and engine damage. Common between 60k-120k km. Also affects MINI Cooper S R56. Cost €1,000-2,500 for chain replacement.
• Vehicle is 15+ years old. Age-related issues: rubber seals/hoses degrade, electrical connectors corrode, suspension bushings wear. Not specific to any engine, but expect €500-1,500/year in age-related maintenance beyond normal service items.
• Peugeot/Citroën/Mini 1.6 VTi/THP (EP6/Prince engine, joint with BMW) with 80k+ km: one of the most problematic modern petrol engines. Known for: timing chain stretch (catastrophic if it snaps — €2,000-4,000), thermostat housing crack (plastic housing leaks coolant — €200-400), excessive oil consumption, and carbon buildup on valves. The turbo THP version adds turbo oil line coking. Always check for timing chain rattle on cold start.