This comprehensive workshop repair service manual is specifically designed for the 1981 BMW 525 and 525i models. It offers an in-depth guide to servicing, maintenance, and troubleshooting for all variations, encompassing all engine types, trim levels, and transmission configurations. Dig into detailed information covering a wide range of topics, including engine, transmission, electrical system, braking system, suspension, steering, bodywork, and more. The manual provides step-by-step instructions, diagrams, and technical specifications to help you confidently perform repairs and maintenance on your BMW 525 or 525i. This invaluable resource empowers you to diagnose and resolve issues, ensuring your vehicle runs smoothly and reliably.

The BMW 525i, produced from 1977 to 1981, marked a significant evolution for the German automaker. This second-generation E12 5 Series represented a refined and sophisticated iteration of the original, building upon the success of its predecessor while introducing new technological advancements. The 525i, powered by a 2.5-liter inline-six engine, offered a balance of performance and efficiency that appealed to drivers seeking a luxury car with a sporty edge. The engine, known for its smooth and responsive nature, produced 150 horsepower, allowing the 525i to achieve a top speed of 124 mph. This performance, combined with the car's comfortable interior, advanced features like power steering and disc brakes, and a reputation for reliability, positioned the 525i as a strong competitor in the premium sedan segment. The E12 5 Series, exemplified by the 525i, played a pivotal role in establishing BMW's global reputation as a manufacturer of high-quality, technologically advanced automobiles. The adoption of a luxurious yet driver-focused design language, a commitment to engineering excellence, and the introduction of innovative features contributed to its enduring appeal. The 525i, despite its age, remains a sought-after classic for enthusiasts and collectors. Its sleek lines, timeless design, and the promise of a rewarding driving experience continue to resonate with those who appreciate the artistry and engineering prowess of BMW. A well-preserved 525i stands as a testament to the enduring legacy of this iconic model and its contribution to the development of the BMW brand.