The Mercedes-Benz W123 Series, produced from 1976 to 1985, represents a pinnacle of executive mid-size automotive engineering, available in sedan, estate, coupe, and long-wheelbase limousine body styles. Renowned for its exceptional build quality, legendary durability, and robust construction, the W123 offered a comfortable ride and a high level of safety for its era. It was equipped with a diverse range of efficient diesel and powerful petrol engines, including the iconic OM617 turbocharged five-cylinder diesel, and featured advanced systems for its time such as optional ABS and airbags on later models.

This comprehensive factory service and workshop manual provides detailed, step-by-step instructions for the maintenance, repair, and diagnostics of the Mercedes-Benz W123 Series. Covering all major systems including engine mechanicals, fuel injection, transmissions, suspension, steering, brakes, and electrical systems, this manual is an indispensable resource for owners, mechanics, and technicians. It includes essential technical specifications, torque values, troubleshooting guides, and diagnostic flowcharts, ensuring the longevity and optimal performance of your W123.

The Mercedes-Benz W123 Series, produced from 1976 to 1985, represents a pinnacle of executive mid-size automotive engineering, available in sedan, estate, coupe, and long-wheelbase limousine body styles. Renowned for its exceptional build quality, legendary durability, and robust construction, the W123 offered a comfortable ride and a high level of safety for its era. It was equipped with a diverse range of efficient diesel and powerful petrol engines, including the iconic OM617 turbocharged five-cylinder diesel, and featured advanced systems for its time such as optional ABS and airbags on later models.

This comprehensive factory service and workshop manual provides detailed, step-by-step instructions for the maintenance, repair, and diagnostics of the Mercedes-Benz W123 Series. Covering all major systems including engine mechanicals, fuel injection, transmissions, suspension, steering, brakes, and electrical systems, this manual is an indispensable resource for owners, mechanics, and technicians. It includes essential technical specifications, torque values, troubleshooting guides, and diagnostic flowcharts, ensuring the longevity and optimal performance of your W123.