The BMW 320i, specifically the E30 chassis produced from 1987 to 1991, represents a significant era in compact executive sedan engineering. Known for its balanced rear-wheel-drive dynamics and the robust M20B20 inline 6-cylinder engine, this model offered a blend of performance and practicality. Its design emphasized driver engagement, a hallmark of BMW’s commitment to automotive excellence, making it a popular choice for both daily commuting and spirited driving. The vehicle’s construction incorporated characteristic crumple zones, contributing to its inherent safety design for the period.

This workshop service manual provides comprehensive guidance for the maintenance and repair of the BMW 320i (E30) models from 1987-1991. It covers essential areas including engine mechanical and electrical systems, fuel and ignition systems, manual and automatic transmissions, drivetrain, suspension, steering, brakes, body and chassis, and heating and air conditioning. Detailed troubleshooting procedures and wiring diagrams are also included, offering invaluable support to owners, mechanics, and technicians in ensuring the optimal performance and longevity of their vehicle.