This manual covers the Mercedes-Benz W123 E-Class, a mid-size luxury executive sedan and estate renowned for its exceptional build quality, legendary reliability, and sophisticated engineering. Produced from 1976 to 1985, with the 1986 model year representing the final iterations of this robust platform, the W123 is celebrated for its over-engineered construction and durability. It offered a range of gasoline and diesel engines, including inline-4, inline-6, and turbocharged diesel variants, paired with manual or automatic transmissions. The vehicle's strengths lie in its comfortable ride, spacious interior, and strong chassis, making it a benchmark for its era and a highly regarded classic.

This comprehensive service and repair manual provides detailed A-Z coverage for all models and repairs of the 1986 Mercedes-Benz W123 E-Class. It is designed to assist owners, mechanics, and technicians in maintaining and repairing the vehicle. The manual covers all major systems, including engine mechanicals, fuel delivery, drivetrain, suspension, steering, braking, and electrical systems. It details essential maintenance procedures, diagnostic troubleshooting guides, and complex repair and rebuild procedures, along with crucial technical data tables such as torque specifications and fluid capacities. This resource is vehicle-specific and intended to offer expert-level guidance, mirroring the information used by dealership technicians.