This comprehensive service repair manual is specifically designed for the 1986 BMW 525 and 525i models. It provides you with a complete and detailed guide to maintaining and repairing your vehicle. With hundreds of pages of information, this manual covers every aspect of your car, from basic maintenance procedures to complex engine and transmission repairs. You'll find detailed instructions, clear diagrams, and comprehensive specifications for all components. This manual is a valuable resource for both professional mechanics and DIY enthusiasts, allowing you to diagnose and fix problems with confidence.

The BMW 525i, produced from 1986 to 1988, marked the fourth generation of the iconic BMW 5 Series. This iteration, internally known as the E28, introduced a refined and evolutionary approach to the model line, building upon the success of its predecessors. It maintained the core principles of driving dynamics and luxury that BMW was renowned for, but with a focus on increased comfort and refinement. The 525i, powered by a 2.5-liter inline-six engine, delivered a smooth and responsive driving experience, with a power output of 170 horsepower. While not the most powerful in its class, the 525i's balanced handling and agile nature made it a joy to drive, particularly on winding roads. Its interior was meticulously crafted, boasting high-quality materials, comfortable seating, and a well-appointed dashboard. This model also introduced new features such as a digital instrument cluster, an optional sunroof, and improved sound insulation. Despite its smaller engine displacement compared to the 535i, the 525i enjoyed a strong reputation for reliability and longevity. This was largely attributed to the well-engineered inline-six engine, known for its durability and smooth operation. The E28 525i also benefited from advanced technologies of the era, including fuel injection and a sophisticated suspension system that provided excellent ride quality and handling. These attributes, combined with its elegant styling and classic BMW craftsmanship, made the 525i a desirable and sought-after model for both enthusiasts and everyday drivers alike. While the E28 generation of the 5 Series is now considered a classic, its timeless design and enduring qualities make it a testament to BMW's commitment to engineering excellence and driving pleasure.