This manual covers the BMW 3-Series, specifically the 320i model with the E30 chassis code, produced between 1987 and 1991. Known for its exceptional driving dynamics, robust build quality, and iconic design, the E30 generation embodies BMW's philosophy of creating the ultimate driving machine. The 320i variant, equipped with the smooth M20B20 inline-six engine, offers a compelling blend of performance and refinement, making it a sought-after vehicle for both daily driving and spirited excursions. Its compact executive segment positioning and reputation for sporting heritage set it apart from competitors of its era.

This comprehensive factory service manual provides detailed information for the maintenance, repair, and troubleshooting of all mechanical, electrical, and body systems. It is designed to assist owners, technicians, and mechanics in understanding and servicing the vehicle. Coverage includes in-depth procedures for engine mechanicals and management, transmission systems, drivetrain, suspension, steering, brakes, and the complete electrical system. Additionally, it details HVAC, bodywork, routine maintenance schedules, diagnostic procedures, and lists any special tools required, ensuring that the integrity and performance of your BMW 3-Series can be maintained to factory standards.