This manual covers the Citroën C4, first generation (C4 I), for the 2006 model year. Built on the PSA PF2 platform, the C4 is a compact car known for its distinctive, aerodynamic styling and innovative features, including a fixed-hub steering wheel on early designs. It was designed to offer consumers a stylish, comfortable, and well-equipped vehicle within the competitive C-segment, aiming to stand out against rivals like the Volkswagen Golf and Ford Focus. The C4 I was available in hatchback and sedan body styles, emphasizing occupant comfort and safety, evidenced by its 5-star Euro NCAP rating.

This comprehensive Service and Repair Manual provides in-depth information for all models and repairs. It covers engine mechanicals, fuel and ignition systems, transmissions (manual, automatic, and automated manual), braking systems including ABS and EBD, suspension and steering, electrical and electronic systems, body and chassis, HVAC, and safety systems like airbags. Detailed procedures for routine maintenance, troubleshooting, diagnostics, and component replacement are included, alongside technical specifications, special tool requirements, and torque values. This manual is an essential resource for owners, mechanics, and technicians to effectively maintain, diagnose, and repair the Citroën C4.