This comprehensive workshop repair service manual provides a wealth of technical information meticulously designed to assist you in maintaining, servicing, and troubleshooting your BMW 525 and 525i models produced between 1981 and 1988. Within its pages, you'll find detailed instructions and diagrams covering a wide range of topics, enabling you to perform repairs and maintenance with confidence. From engine and transmission systems to electrical components, bodywork, and suspension, this manual offers in-depth coverage of every aspect of your vehicle. Whether you are a seasoned mechanic or a DIY enthusiast, this manual serves as an invaluable resource, empowering you with the knowledge and guidance needed to tackle any repair or maintenance task.

The BMW 525 and 525i, produced from 1981 to 1988, represent a significant chapter in the history of BMW's E12 generation of the 5 Series. These models were known for their refined driving experience, stylish design, and robust engineering. The 525 was powered by a 2.5-liter M20 straight-six engine producing 150 horsepower, while the 525i featured a fuel-injected version of the same engine, boasting a modest power increase to 170 horsepower. Both models were available with a 4-speed automatic transmission or a 5-speed manual gearbox. The E12 5 Series was renowned for its balanced handling, thanks to its independent suspension system and precise steering. The interior was characterized by a focus on practicality and driver comfort, featuring comfortable seats, a spacious cabin, and a straightforward dashboard layout. While the 525i offered a slightly sportier driving experience due to its fuel injection system, both models provided a refined and engaging driving experience. Despite their age, these vehicles remain popular among enthusiasts who appreciate their classic styling, reliable mechanicals, and timeless driving dynamics. The BMW 525 and 525i are a testament to the engineering prowess and design excellence that have come to define the BMW brand.