This comprehensive repair service manual is a valuable resource for owners and professionals seeking detailed information on the BMW 315 and 316 E21 models produced between 1977 and 1992. It provides the same technical specifications and repair procedures used by authorized BMW service departments, empowering individuals with basic mechanical skills to perform maintenance and repairs independently. The manual covers a wide range of topics, including general vehicle information, engine service and overhauling, transmission, chassis, body, wiring, fuel system, emission control, induction, mechanical and control systems, transmission and differentials, troubleshooting and diagnostics, steering and suspension, brakes, and ABS. It also includes full specifications and torque settings, comprehensive service work instructions, and practical tips for maintaining your vehicle's health. This manual provides detailed information on diagnosing engine fault symptoms, evaluating repair approaches, testing suspected parts using expert techniques, tracing and verifying wiring diagrams, understanding and analyzing engine management systems, implementing common fixes, and assessing the work done by mechanics. It also offers practical quick solutions to common problems, such as no-starts, hesitations, and stalling, and provides valuable insights into preventing minor issues from escalating into major repairs. For individuals seeking service manuals for other models, years, or makes, visit www.infoautomotriz.cl for a wider selection.

The BMW 315 and 316 E21, produced from 1977 to 1982, represented the first generation of the iconic BMW 3 Series. This compact executive car was a groundbreaking offering from BMW, marking their entry into the burgeoning market for sporty and practical saloons. The E21 was designed by Paul Bracq, renowned for his sleek and elegant designs. Its distinctive "shark nose" front end, with its protruding grille and slim headlights, became a defining characteristic of the model. The E21 was available in two-door sedan and two-door coupe body styles. It featured a unibody construction, with a MacPherson strut front suspension and a semi-trailing arm rear suspension, providing a balance of comfort and handling capabilities. The E21's interior was characterized by its driver-centric design, with a simple yet functional dashboard layout and comfortable seating. In terms of powertrains, the 315 was equipped with a 1.6-liter four-cylinder engine producing 75 horsepower, while the 316 boasted a larger 1.8-liter engine generating 90 horsepower. These engines, coupled with the E21's lightweight construction, made for a nimble and engaging driving experience. While not as powerful as the later 3 Series models, the E21 offered a unique blend of affordability, practicality, and driving enjoyment. The 315 and 316 E21 models, despite their relatively short production run, achieved considerable success, solidifying the BMW 3 Series as a desirable and respected nameplate in the automotive world. Their legacy continues to inspire enthusiasts and collectors today, proving that the hallmarks of a great car – timeless design, engaging driving dynamics, and practicality – can be found in even the earliest iterations of a legendary model.