This manual covers the Citroen C4, specifically the First Generation (Phase 1) models produced around 2006, featuring the 1.6L NFU (EC5) engine. The Citroen C4 is a compact family car known for its distinctive design language, including a unique 'poly-elliptical' body shape and an innovative fixed-hub steering wheel. It was positioned as a stylish and technologically advanced option in its segment, offering a comfortable ride and a spacious interior with features like a central digital instrument cluster. The C4 achieved a 5-star safety rating from Euro NCAP, highlighting its strong occupant protection.

This comprehensive factory service manual provides all-encompassing coverage for all repairs, from routine maintenance to complex overhauls. It details procedures for engine mechanicals, fuel and exhaust systems, manual and automatic transmissions, drivetrain, suspension, steering, brakes, and electrical systems. The manual includes diagnostic capabilities, rebuild procedures, detailed schematics, torque specifications, and tolerances. It is designed to assist owners, mechanics, and technicians in effectively maintaining, diagnosing, and repairing the Citroen C4, ensuring its optimal performance and longevity.