The BMW C1, produced from 2000 to 2003, represents a unique approach to urban mobility, offering the agility of a scooter with enhanced safety features typically found in automobiles. Available in C1 125 and C1 200 variants, this premium vehicle was engineered to provide commuters with a more secure and weather-protected riding experience. Its standout feature is the integrated safety cell, often referred to as a roll cage, complemented by a three-point seatbelt and optional Anti-lock Braking System (ABS). This focus on safety, combined with its distinctive design and reputation for engineering quality, positioned the C1 as an innovative solution for urban transport. This repair service manual provides comprehensive guidance for the maintenance and repair of the C1 models. It covers all essential systems, including the engine (mechanical and management), transmission, braking system, chassis, suspension, and electrical systems. Detailed procedures for preventative maintenance, troubleshooting common issues, component overhaul, and diagnostics are included, along with crucial technical specifications and tolerances. This manual serves as an indispensable resource for owners, mechanics, and technicians, ensuring the C1 remains in optimal condition and its advanced safety features are properly maintained.