The Mercedes-Benz S-Class, specifically the Second Generation W126, produced from 1979 to 1991, represents a benchmark in full-size luxury sedans. Renowned for its exceptional build quality, sophisticated engineering, and supremely comfortable ride, the W126 was considered one of the best vehicles in the world during its era, competing with models from BMW, Jaguar, Cadillac, and Lincoln. It pioneered numerous safety advancements for Mercedes-Benz, offering a robust chassis, advanced braking systems, and early forms of driver assistance. Available with a range of inline-6 and V8 engines, this model set a high standard for luxury, durability, and innovation.

This guide serves as a comprehensive buyer's resource for the Mercedes-Benz W126 S-Class, focusing on pre-purchase inspections and common pitfalls. It covers essential mechanical systems including the engine, drivetrain, suspension, and brakes, as well as basic electrical checks and common interior and bodywork wear points. The manual details key inspection areas and helps identify common W126 specific faults, providing insights that can help potential owners make informed decisions and avoid costly repairs. With 33 pages of information, this English-language guide is an invaluable aid for anyone considering acquiring or evaluating a W126 S-Class.