This manual covers the BMW 3 Series, specifically the E30 chassis from the 1985 model year, equipped with either the M10 4-cylinder or M20 6-cylinder engines. The E30 generation, introduced in 1982, revolutionized the compact executive sports sedan market with its emphasis on driver engagement, balanced chassis, and robust engineering. Known for its performance, luxury, and driving dynamics, the E30 was a significant model for BMW, often praised by automotive publications for its handling and build quality. This manual provides comprehensive information for maintaining and repairing these iconic vehicles, ensuring their longevity and optimal performance.

This workshop manual serves as an essential resource for owners, mechanics, and technicians, offering detailed guidance on service, repair, maintenance, and diagnostics. It covers a wide array of systems, including engine mechanicals, fuel and cooling systems, drivetrain, suspension, steering, brakes, and the electrical system. The manual includes step-by-step repair procedures, troubleshooting guides, diagnostic techniques, and detailed wiring diagrams. Its scope extends to routine maintenance tasks, component adjustments, and in-depth troubleshooting for common issues specific to the E30 models, making it an indispensable tool for anyone working on this vehicle.