The BMW 3-Series and M3, chassis code E30, represents an iconic generation of sporty, driver-focused vehicles produced from 1982 to 1994, with the 1991 model year covered in this manual. Renowned for its balanced handling, rear-wheel-drive dynamics, and precision engineering, the E30 line cemented BMW's reputation in the automotive world. This generation introduced the legendary M3, a homologation special that achieved significant success in motorsport and remains highly sought after by enthusiasts. Available in various body styles including 2-door and 4-door sedans, convertibles, and the performance-oriented M3 coupe and cabriolet, the E30 offered a range of engine variants, from the 1.8L M40 to the potent 2.3L S14 DOHC engine in the M3.

This comprehensive Service and Repair Manual provides detailed, factory-issued technical documentation for all repairs, covering the entirety of the BMW 3-Series / M3 E30. It is designed to assist BMW enthusiasts, DIY mechanics, and professional technicians in maintaining and repairing these vehicles. The manual's scope includes in-depth procedures for engine mechanicals, fuel and ignition systems, transmissions (manual and automatic), drivetrain, suspension, steering, brakes, and the complete electrical system. Additionally, it offers guidance on routine maintenance, troubleshooting common issues, component overhauls, and the use of special tools, ensuring accurate and efficient service.