The 1991 BMW M3, a homologation special derived from motorsport, represents a pinnacle of compact executive sports car engineering. Built upon the robust E30 platform, this model is distinguished by its aggressive, flared bodywork, unique aerodynamic enhancements, and a high-revving S14 engine, all designed to meet racing regulations. As a successor to a lineage of successful touring cars, the E30 M3 offers a pure driving experience, characterized by precise handling, exceptional driver feedback, and a potent naturally aspirated inline-4 engine, making it a highly sought-after vehicle for enthusiasts and collectors alike.

This comprehensive factory service repair manual provides in-depth guidance for the maintenance, repair, and technical understanding of the 1991 BMW M3. It covers all essential systems, including the S14 engine, Getrag 5-speed manual transmission, suspension, braking system, and electrical components. Within these pages, you will find detailed procedures for routine maintenance, diagnostic troubleshooting, component removal and installation, and complete rebuild instructions, ensuring that owners and technicians have the necessary information to preserve the performance and integrity of this iconic vehicle.