The Mercedes-Benz W123, produced from 1981 to 1993, stands as a testament to exceptional engineering and enduring quality. Available in Sedan, Coupe, Estate, and Long Wheelbase body styles, this series was built upon a foundation of robust construction and remarkable reliability, often exceeding 300,000 miles with proper care. Renowned for its solid mechanicals and focus on passenger safety, the W123 offered a range of efficient gasoline and diesel engines, including the highly regarded OM615, OM616, and OM617 diesel powerplants. Its competitive standing against premium marques of the time was solidified by its reputation for durability and a comfortable, well-appointed interior.

This comprehensive workshop service and repair manual provides detailed guidance for the Mercedes-Benz W123 series. Covering all gasoline and diesel engines, manual and automatic transmissions, fuel systems, electrical systems, brakes, suspension, and HVAC, this extensive resource is designed for owners and technicians alike. Within its pages, you will find step-by-step procedures for scheduled maintenance, diagnostics, component repair, and overhauls. The manual includes crucial technical specifications, fluid requirements, and insights into common wear items, ensuring that the longevity and performance of your W123 can be maintained effectively.