The BMW 3 Series E21 Workshop Service Repair Manual offers a comprehensive guide to maintaining and repairing your vehicle. This manual is a valuable resource for both experienced mechanics and DIY enthusiasts. The content covers a wide range of topics, including:

* **Powertrain:** Detailed information on the engine, ignition system, cooling system, fuel system, transmission, drivetrain, differential, and driveshaft.
* **Chassis & Suspension:** In-depth coverage of the suspension, steering, brakes, restraint systems, body, wheels, and tires.
* **Electrical & Electronics:** Thorough explanations of body electrical systems, electronic control modules, instrument cluster, lamps, power systems, message systems, chime/buzzer, heated systems, and horn.
* **Comfort & Convenience:** Instructions for maintaining and repairing heating, ventilation, air conditioning, and audio/video systems.
* **Lubrication & Maintenance:** Detailed lubrication schedules and maintenance procedures to ensure optimal performance.
* **Vehicle Quick Reference:** Overviews, specifications, and troubleshooting charts for quick access to essential information.

With clear and concise instructions, along with detailed wiring diagrams, this manual empowers you to tackle repairs with confidence. It provides the necessary information to diagnose and resolve issues efficiently.

The BMW 3 Series E21 is the first generation of the iconic BMW 3 Series, a compact executive car that has become synonymous with driving pleasure and sporty handling. Introduced in 1975, the E21 marked a significant departure from its predecessor, the 1800/2000, and established the 3 Series as a separate model line. It was designed by Paul Bracq, who also penned the iconic BMW 5 Series E12, and featured a sleek, wedge-shaped design with a long hood and a short rear deck, a signature styling element that would become a defining characteristic of future 3 Series models. The E21 was initially offered with a range of four-cylinder engines, starting with the 1.6-liter M10 unit, and later expanding to include larger displacement options like the 2.0-liter and 2.3-liter variants. This versatile powertrain lineup catered to a diverse customer base, from those seeking a comfortable and efficient commuter car to those seeking a more sporty driving experience.

The E21 gained immense popularity for its engaging driving dynamics, thanks to its precise steering, well-balanced chassis, and responsive handling. It was praised for its nimble and predictable nature, making it a favorite among enthusiasts and professional drivers alike. The E21 also featured a number of innovative features for its time, including a MacPherson strut front suspension, a rear independent suspension, and a lightweight construction that contributed to its agility and performance. Over its seven-year production run, the E21 underwent a number of updates, including the introduction of revised engines, new trim levels, and cosmetic refinements. Despite being replaced by the E30 in 1982, the E21 remains a highly sought-after classic car, appreciated for its timeless design, driving dynamics, and historical significance in the evolution of the BMW 3 Series.