This manual covers the Lancer Evolution, a high-performance sports sedan with a strong rally heritage. Known for its advanced Super All-Wheel Control (S-AWC) system and a potent turbocharged 4G63 engine, this model, associated with the CT9A chassis and the Evo IX generation, offers exceptional handling and driving dynamics. Its design prioritizes performance and driver engagement, making it a sought-after vehicle for enthusiasts and those who appreciate its motorsport lineage and engineering prowess. This comprehensive factory service manual provides detailed information for the diagnosis, maintenance, adjustment, service operations, component replacement, disassembly, and assembly of the Lancer Evolution. It covers all major systems, including engine mechanicals, fuel and emission controls, drivetrain, suspension, brakes, steering, electrical systems, and body components. The manual is an indispensable resource for owners, mechanics, and technicians, offering factory-level technical data, diagrams, and procedures necessary for accurate repair and upkeep, ensuring the vehicle's optimal performance and longevity.