This comprehensive workshop repair service manual is specifically tailored for the 1991 BMW 518 and 518i models. It offers a wealth of technical information, encompassing all aspects of servicing, maintenance, and troubleshooting for your vehicle. Within this manual, you will find detailed instructions and diagrams covering every component and system, including engines, transmissions, electrical systems, brakes, suspension, and more. It provides step-by-step procedures for a wide range of tasks, from routine maintenance like oil changes and filter replacements to complex repairs involving engine overhauls or electrical diagnostics. Whether you are a seasoned mechanic or a dedicated DIY enthusiast, this manual equips you with the knowledge and guidance necessary to confidently work on your BMW 518 or 518i.

The BMW 518i, produced from 1990 to 1995, was a compact executive sedan that represented a significant departure from its predecessors. While carrying the "5 Series" designation, it was smaller and more affordable than its larger siblings, aiming to appeal to a wider audience. Powered by a 1.8-liter four-cylinder engine, the 518i offered a balance of practicality and performance. The engine, codenamed M40, was known for its smooth operation and reliability, producing 115 horsepower. The 518i was available with a five-speed manual transmission or a four-speed automatic, providing drivers with a choice between engaging driving dynamics or effortless cruising. The 518i, particularly the early models, inherited the styling of its larger 5 Series counterparts, featuring a classic BMW front grille with the signature kidney shape. Its sleek lines and unassuming presence contributed to its overall elegance, making it a desirable choice for both personal and business use. Despite its smaller engine size and more affordable price point, the 518i retained the comfort and sophistication expected of a BMW. The interior showcased high-quality materials and a driver-focused cockpit. The 518i incorporated features like power steering, power windows, and air conditioning, making it a comfortable and convenient car to drive. Its suspension provided a balanced ride, blending comfort with handling responsiveness. However, the 518i was not without its shortcomings. Its smaller engine, while efficient, lacked the power and torque of its larger six-cylinder siblings, making it less engaging for spirited driving. Moreover, its fuel economy, although reasonable for the era, was not as impressive as some of its competitors. Despite these limitations, the BMW 518i offered an appealing blend of practicality, affordability, and the renowned BMW driving experience, making it a successful and popular model in its segment.