This workshop service repair manual provides comprehensive information for BMW 3 Series models, specifically the 328i and 328xi, produced between 2006 and 2010. These vehicles, based on the E90 (Sedan), E91 (Wagon/Touring), and E92 (Coupe) chassis codes, are powered by the renowned 3.0L naturally aspirated inline-six engines (N51/N52), celebrated for their smooth power delivery and advanced technologies like VANOS and Valvetronic. Known for their engaging driving dynamics, balanced chassis, and premium compact executive segment positioning, these BMWs offered a blend of performance and luxury, competing with established marques in the automotive industry.

This manual is designed to be an indispensable resource for owners, mechanics, and technicians. It covers all major vehicle systems, including powertrain, drivetrain, chassis, and electrical components, with detailed procedures for routine maintenance, complex repairs, and diagnostics. Users will find step-by-step instructions for tasks such as oil changes, filter replacements, engine component servicing, transmission overhauls, suspension and brake system repairs, and electrical system troubleshooting. The manual also includes essential technical specifications, wiring diagrams, and safety guidelines, ensuring that the BMW 3 Series can be maintained and repaired to factory standards, preserving its performance and reliability.