This manual covers the Mercedes-Benz W123 Series, produced from 1976 to 1986, including the 200D, 240D, 240TD, 300D, and 300TD variants. Renowned for its robust engineering, exceptional durability, and comfortable ride, the W123 established a benchmark for mid-size executive sedans and wagons of its era. Its clean, timeless design, attributed to Bruno Sacco, and the legendary longevity of its diesel engines, which often surpassed half a million miles, cemented its reputation as a reliable and enduring vehicle. The W123 was engineered with a strong emphasis on safety, featuring a reinforced passenger cell and crumple zones, reflecting Mercedes-Benz's commitment to quality and advanced automotive design.

This comprehensive workshop service and repair manual provides detailed information for maintaining and repairing your Mercedes-Benz W123. It covers all major systems, including diesel engine overhaul, transmission service, brake system repair, suspension and steering, and the electrical system. Within its approximately 1000+ pages, you will find essential procedures for scheduled maintenance, component replacement, diagnostic troubleshooting, and technical specifications, including torque values and fluid requirements. This manual is an indispensable resource for owners, mechanics, and technicians seeking to ensure the optimal performance, reliability, and longevity of their W123 Series vehicle.