This manual covers the BMW 518i, model E28, produced from 1981 to 1987. As an executive sedan, the 518i represented a significant evolution of BMW's mid-size offering, building upon its predecessor with improved aerodynamics and chassis dynamics. It embodies BMW's philosophy of driving dynamics, build quality, and performance engineering, competing with vehicles like the Mercedes-Benz W123 and Audi 100. The 518i features an inline 4-cylinder, 1.8-liter M10 engine, typically paired with a 4-speed manual or optional 3-speed automatic transmission, and utilizes a Bosch L-Jetronic fuel injection system.

This comprehensive service repair manual provides detailed information for owners, mechanics, and technicians. It covers a wide range of systems including engine service, transmission repair, electrical systems, fuel systems, suspension and steering, brake systems, and body and chassis. Procedures for preventive maintenance, troubleshooting common issues, repair and rebuild processes, adjustments, and component replacement are thoroughly explained. The manual also includes technical specifications, wiring diagrams, and diagnostic procedures, offering a complete resource for maintaining and repairing the BMW 518i.