This manual provides comprehensive technical information for the BMW M3 E30, a legendary sports sedan developed by BMW Motorsport GmbH. Produced from 1986 to 1991, this homologation special, powered by the S14 inline 4-cylinder engine, defined performance for its era and competed with elite sports cars. Its engineering quality, reliability, and unique chassis and body modifications set it apart, making it a highly sought-after vehicle for driving enthusiasts. This guide is specifically tailored to the nuances of the E30 M3, offering a level of detail beyond generic E30 repair manuals.

This Service and Repair Manual, written in English, covers all models and repairs A-Z for the BMW M3 E30. It details procedures for engine diagnostics, overhaul, and tuning, transmission and clutch systems, brakes including ABS, electrical systems with full wiring diagrams, suspension and steering, body and chassis work, and HVAC systems. The manual also includes scheduled maintenance, troubleshooting guides, repair instructions, and information on special tools. With over 800 pages of content, it serves as an authoritative resource for owners and technicians, ensuring accurate maintenance and repair of this iconic vehicle.