This workshop service repair manual covers the BMW 3 Series, specifically the 320i model from the first generation E21, produced between 1975 and 1984. Known for its driver-focused design, balanced handling, and quality engineering, the E21 established BMW's reputation in the compact executive sports sedan segment. This vehicle, powered by the M10 engine family, features a Bosch L-Jetronic fuel injection system and is equipped with either a 4-speed or 5-speed manual transmission, or an optional 3-speed automatic. Its iconic design, including the Hofmeister kink and driver-oriented dashboard, made it a benchmark in its class, competing with vehicles like the Mercedes-Benz W123 and Audi 80.

This comprehensive 910-page English-language manual provides detailed guidance for maintaining and repairing the BMW 3 Series E21. It covers all essential systems, including the engine, fuel, ignition, transmission, suspension, brakes, steering, and electrical systems. The manual offers step-by-step instructions for routine maintenance, component replacement, troubleshooting, and even engine and transmission overhauls. It also includes critical technical specifications, torque values, fluid capacities, and adjustment procedures, making it an indispensable resource for owners, mechanics, and technicians seeking to preserve the performance and longevity of their classic BMW.