The Mercedes-Benz 300TD, chassis code W123, produced in 1985, represents a pinnacle of robust engineering and enduring quality. This mid-size luxury sedan and wagon variant is celebrated for its over-engineered construction and exceptional longevity, particularly its iconic OM617.952 3.0L turbocharged diesel engine, which offers impressive torque and fuel economy. Renowned for its durability and resistance to rust when properly maintained, the W123 series, including the 300TD, has earned a cult following among enthusiasts who value reliability and classic automotive design.

This comprehensive Service and Repair Manual, written in English and covering global regions, provides detailed guidance for maintaining and repairing your 1985 Mercedes-Benz 300TD. It encompasses all major systems, including the engine, transmission, drivetrain, brakes, steering, and electrical components, along with bodywork and climate control. The manual offers step-by-step procedures for routine maintenance, complex engine and transmission repairs, brake and suspension servicing, electrical diagnostics, and fuel system maintenance, making it an indispensable resource for owners and technicians alike.