This manual covers the 528 and 528i models, code-named E28, produced between 1981 and 1988. These executive sedans are celebrated for their refined engineering, emphasizing driving dynamics and driver engagement, hallmarks of commitment to performance. Powered by the robust M30B28 inline 6-cylinder engine, these vehicles offered a blend of luxury and sportiness, competing with contemporary offerings from other premium manufacturers. The E28 chassis represented a significant advancement in mid-size luxury sedan lineage, known for its solid build quality and driver-focused cockpit. This comprehensive Service and Repair Manual in English provides in-depth guidance for the maintenance, diagnosis, and repair of your E28. It covers all essential systems, including the M30B28 engine, L-Jetronic fuel injection, manual and automatic transmissions, drivetrain, suspension, steering, brakes, and the entire electrical system. Detailed procedures for routine maintenance, component removal and installation, engine rebuilding, and troubleshooting are included, supported by factory-level technical detail, torque specifications, and numerous diagrams. This manual is an indispensable resource for owners, mechanics, and technicians aiming to preserve the performance and longevity of their 528 / 528i.