This manual covers the Citroën C4 I, produced from 2004 to 2010, including the 2005 model year. The C4 is a compact family car, a successor to the Xsara, known for its innovative design, comfortable ride, and advanced features for its class. It competed with vehicles like the Volkswagen Golf and Ford Focus. Notable design elements include a distinctive coupe-like profile and an innovative fixed-hub steering wheel on some early models. The C4 achieved a 5-star Euro NCAP safety rating and offered a range of petrol and diesel engines, including 1.6L and 2.0L HDi diesel engines and 1.4L, 1.6L VTi, and 2.0L petrol engines.

This comprehensive service and repair manual provides detailed, dealer-level technical expertise for all Citroën C4 I models. It covers A-Z repairs, including routine maintenance, component removal and installation, major repairs, and diagnostic procedures for all major vehicle systems such as engine mechanicals, engine management, transmission, drivetrain, suspension, steering, brakes, electrical systems, body and chassis, climate control, interior trim, and safety systems. The manual also includes technical specifications, fluid specifications, and troubleshooting guidance for common issues, ensuring owners and technicians can accurately maintain and repair the vehicle.