This comprehensive factory service repair manual is specifically designed for the 1981 BMW 518 and 518i models. It provides you with an in-depth understanding of every aspect of these vehicles, empowering you to perform maintenance and repairs with confidence. The manual includes detailed instructions and diagrams for a wide range of procedures, covering everything from basic maintenance like oil changes and filter replacements to complex repairs involving the engine, transmission, electrical systems, and more. You'll find detailed specifications, troubleshooting guides, and wiring diagrams to assist you in diagnosing and resolving any issues that may arise. This manual is an invaluable resource for both professional mechanics and dedicated DIY enthusiasts, ensuring you have everything you need to keep your BMW running smoothly and efficiently for years to come.

The BMW 518i, produced from 1981 to 1984, marked a significant shift in BMW's strategy, offering a more affordable entry point into the luxurious and sporty world of the 5 Series. It was the smallest and most economical engine option within the E12 generation, departing from the traditional six-cylinder powerplants that defined the 5 Series. This inline-four cylinder engine, displacing 1.8 liters, delivered 90 hp and a respectable 110 Nm of torque. This engine was mated to a 4-speed manual transmission or a 3-speed automatic transmission, making the 518i a surprisingly fuel-efficient car for its class, capable of achieving 7.4 L/100 km on the combined cycle. Despite its smaller engine and slightly less powerful nature, the 518i retained the signature BMW driving dynamics, offering a balanced and engaging experience that was appreciated by drivers who prioritized efficiency and affordability without compromising on the brand's hallmark handling prowess. Furthermore, the 518i came standard equipped with features that were considered luxurious for the time, including power steering, power brakes, and a comfortable interior with a focus on ergonomics. Although it lacked the aggressive styling cues of its larger, more powerful siblings, the 518i offered a refined and understated aesthetic that appealed to those seeking a more discreet yet still elegant driving experience. Its compact dimensions, coupled with its agility and efficiency, made it an ideal choice for urban environments. While its performance was not as exhilarating as its six-cylinder counterparts, the 518i provided a practical and economical option for those seeking a premium driving experience without the high running costs. Ultimately, the 518i carved out its own niche within the 5 Series lineup, offering a unique balance of affordability, practicality, and the distinctive BMW driving experience.