This manual covers the BMW M3 (E30) from 1989, a celebrated compact executive sports sedan and coupe renowned for its motorsport-derived engineering and exceptional handling. As a homologation special, the E30 M3 features unique aerodynamic enhancements, including flared wheel arches and spoilers, along with a specially tuned suspension for superior agility. Its naturally aspirated 2.3-liter S14 inline-4 engine, equipped with individual throttle bodies, delivers a potent 218 horsepower, making it a formidable competitor in its era against marques like Porsche and Mercedes-Benz. This model represents a pinnacle of BMW's performance engineering from the late 1980s, appealing to enthusiasts and collectors alike for its driving dynamics and rich racing heritage.

This factory service repair manual provides comprehensive guidance for the maintenance, repair, and diagnostics of the 1989 BMW M3 (E30). It details procedures for all major systems, including the engine, fuel, ignition, cooling, exhaust, clutch, manual transmission, drivetrain, suspension, steering, brakes, and electrical systems, as well as bodywork and HVAC. The manual covers scheduled maintenance, in-depth engine and transmission repair, suspension and brake servicing, electrical diagnostics, and bodywork procedures. Its purpose is to equip owners, mechanics, and technicians with the technical knowledge and step-by-step instructions necessary to preserve the performance, reliability, and integrity of this iconic vehicle.