This manual covers the BMW 323i (E46) models produced between 1999 and 2005. Known for its sporty handling, refined interior, and balanced performance, the 323i established a benchmark in the compact executive sedan segment. It is powered by the M52TU B25 inline-6 engine, a 2.5-liter unit producing 184 horsepower and 173 lb-ft of torque, paired with either a 5-speed manual or a 5-speed automatic transmission. The vehicle's engineering quality and reliability are hallmarks of the BMW brand, making it a popular choice for enthusiast owners and those seeking a premium driving experience.

This comprehensive factory service manual provides detailed information for the maintenance, repair, and diagnostics of the BMW 323i. It covers all major systems, including engine mechanical and electrical components, transmission, drivetrain, suspension, brakes, steering, and the complete electrical system. Procedures for scheduled maintenance, troubleshooting common issues, major and minor repairs, and system diagnostics are thoroughly explained. With over 800 pages of detailed instructions, diagrams, and specifications, this manual is an essential resource for owners, mechanics, and technicians to ensure the optimal performance and longevity of their vehicle.