This comprehensive service and repair manual is specifically tailored for the Mercedes-Benz W114/W115 (220, 220D, 230, 240D, 250, 250C, 280, 280C, 300D) car, covering model years 1968 through 1976. It provides a wealth of detailed information to empower you to maintain, service, diagnose, and repair your vehicle with confidence.

The manual delves deep into every aspect of your car, offering step-by-step instructions, diagrams, illustrations, wiring schematics, and specifications. You'll find in-depth guidance on engine overhaul and rebuilding, brake systems, sunroof operation, timing belt replacement, troubleshooting and diagnostics, computer diagnostic trouble tree charts, engine performance tuning, front end and alignment procedures, suspension components, transmission removal and installation, air conditioning service, transmission servicing, computer diagnostic codes, firing orders, detailed specifications for each model, factory maintenance schedules, serpentine belt routings, timing belt service procedures, brake servicing procedures, common driving concerns, complete torque specifications, U-joint and CV-joint service procedures, comprehensive repair procedures, detailed wiring diagrams, vacuum diagrams, and much more.

This manual is not generic repair information - it is vehicle-specific, providing the same information used by technicians at Mercedes-Benz dealerships. Its user-friendly design allows you to print only the pages and diagrams you need, ensuring a clutter-free experience. The detailed illustrations and clear instructions make it easy to follow, even for those with varying levels of mechanical experience.

The Mercedes-Benz W114/W115, affectionately nicknamed the "Strich Acht" (Stroke Eight) due to its straight-eight engine, was a pivotal model for the German marque, marking a significant shift in design philosophy and introducing a new era of luxury and practicality. Introduced in 1968 and produced until 1976, these mid-size saloons replaced the W110 "Fintail" series and established a new benchmark for comfort, safety, and refinement. The W114/W115 differed from previous Mercedes models in its more rounded, less angular styling, reflecting the evolving aesthetic trends of the time. The car's design was a direct result of the "Neue Klasse" (New Class) philosophy, prioritizing a modern, spacious interior and a more efficient, lighter construction. This approach led to the adoption of a unitized body structure, a first for Mercedes-Benz, which significantly enhanced both safety and rigidity. The W114/W115 range was initially powered by a range of robust straight-six engines, with the larger W115 models later receiving the iconic M117 3.5L V8 engine, the first V8 in a Mercedes production car. This powertrain offered remarkable smoothness and performance while remaining remarkably refined and efficient.

The W114/W115 models, particularly those equipped with the V8 engine, achieved significant success and garnered a reputation for durability and longevity. Their comfortable ride, responsive handling, and luxurious interior cemented their position as a popular choice for both private owners and fleet operators. The "Strich Acht" models, particularly the 3.5 V8 versions, remain highly sought-after by collectors and enthusiasts today. Their inherent reliability, timeless design, and ability to be restored to factory-spec condition make them a compelling investment. Though the W114/W115 series might not be remembered for groundbreaking technical innovations, they were a significant evolution for Mercedes-Benz, marking a move towards more modern and practical design while retaining the brand's core values of quality, craftsmanship, and engineering excellence. Their lasting legacy continues to inspire admiration and respect from automotive enthusiasts worldwide.