This manual covers the 518i (E28) produced between 1985 and 1988. As an executive mid-size sedan, the 518i embodies a renowned focus on driving dynamics, refined engineering, and exceptional build quality, characteristic of the 'Ultimate Driving Machine' philosophy. This model, powered by the M10B18 1.8-liter inline 4-cylinder engine with Bosch L-Jetronic fuel injection, offered a balance of performance and efficiency for its era, competing with other premium sedans of the time. Its design, an evolution of classic proportions with crisper styling, contributed to its appeal as a sophisticated and capable vehicle.

This comprehensive Service and Repair Manual in English provides detailed guidance for owners, mechanics, and technicians. It covers all major systems, including the powertrain (engine, fuel, exhaust, cooling, ignition), drivetrain (manual and optional automatic transmissions, clutch, driveshafts, differential, axles), chassis (suspension, steering, brakes), electrical systems (starting, charging, lighting, instrumentation, wiring diagrams), and body/interior components (body panels, doors, windows, HVAC). The manual details essential maintenance procedures such as oil changes, filter replacements, and tune-ups, alongside in-depth repair instructions for engine overhauls, transmission rebuilds, brake system repairs, and electrical diagnostics. Troubleshooting guides and refurbishment steps are also included, ensuring thorough understanding and capability for maintaining and restoring the 518i.