This comprehensive workshop repair service manual covers the BMW 525i (E28) models produced between 1981 and 1988. The E28 5 Series, a distinguished executive mid-size sedan, embodied BMW's commitment to delivering 'The Ultimate Driving Machine.' The 525i variant, powered by the robust 2.5-liter M30 inline-six engine, offered a compelling balance of performance and refinement, making it a notable competitor in its segment against vehicles like the Mercedes-Benz W123/W124 E-Class and Audi 100/200. Known for its sophisticated engineering, agile handling, and driver-focused interior, the E28 has earned a reputation for quality and durability.

This manual provides extensive information essential for the maintenance, diagnosis, and repair of your BMW 525i. It details routine and preventative maintenance procedures, including oil changes, filter replacements, and fluid services, alongside in-depth coverage of major repairs for engine, transmission, drivetrain, brakes, suspension, and steering systems. Furthermore, it offers guidance on electrical system troubleshooting, HVAC system service, and bodywork. With over 800 pages of detailed instructions, component specifications, torque values, and wiring diagrams, this resource is designed to assist owners, mechanics, and technicians in keeping their E28 operating at peak performance and reliability.