This manual covers the Mercedes-Benz 240D, part of the W123 Series, produced for the model years 1981, 1982, and 1983. Renowned for its exceptional fuel economy and durability, the 240D was a reliable workhorse within the compact executive and mid-size sedan and wagon segments. Its design philosophy emphasized functional, durable, and conservative styling, contributing to its robust performance and longevity, a hallmark of Mercedes-Benz engineering excellence. The W123 chassis itself is widely regarded as one of the most durable and reliable Mercedes-Benz models ever produced, often referred to as 'tank-like'.

This comprehensive Workshop Repair Service Manual provides essential information for maintaining and repairing all models, engines, and trim levels within the specified years. It details procedures for routine maintenance, troubleshooting, and extensive repairs across all major vehicle systems, including the OM616 diesel engine, fuel, cooling, lubrication, exhaust, transmission (manual and automatic), drivetrain, suspension, steering, brakes, electrical systems, and bodywork. This resource is invaluable for Mercedes-Benz owners, independent repair shops, and classic car enthusiasts seeking to preserve the integrity and performance of their W123 240D.