This comprehensive service and repair manual provides detailed instructions and technical specifications for Audi 90 models produced between 1988 and 1992. It covers a wide range of topics, including engine maintenance, electrical systems, bodywork, brakes, suspension, transmission, and more. Whether you're a seasoned mechanic or a DIY enthusiast, this manual offers everything you need to perform repairs, troubleshoot issues, and keep your Audi 90 running smoothly. The manual is organized in a logical, easy-to-follow format, with clear diagrams, illustrations, and step-by-step instructions to guide you through each procedure. You'll find everything from basic maintenance tasks to complex repairs, ensuring you have the knowledge and resources to handle any situation.

The Audi 90, produced from 1988 to 1992, marked a significant step forward for Audi in the compact executive car segment. Replacing the Audi 80, the 90 offered a blend of luxury, performance, and practicality that appealed to a wide range of customers. While visually similar to its predecessor, the 90 featured a longer wheelbase and wider track, enhancing interior space and handling stability. Power came from a range of four-cylinder and five-cylinder engines, including the legendary 20-valve 2.0-liter turbocharged unit, offering spirited performance and a distinctive sound. The 90 also introduced a number of innovative features, such as a sophisticated four-wheel drive system (quattro) and a pioneering five-speed automatic transmission with Tiptronic manual control, enhancing both off-road capability and driver engagement. The Audi 90's enduring appeal lies in its combination of refined design, advanced engineering, and driver-focused features. Its spacious and comfortable interior, with high-quality materials and a well-designed dashboard, provided a luxurious experience. The car's handling was praised for its precision and agility, thanks to its well-balanced chassis and precise steering. The Audi 90's ability to seamlessly transition between effortless cruising and spirited performance made it a versatile choice for both everyday driving and longer journeys. Despite being superseded by the Audi A4 in 1994, the 90 remains a testament to Audi's commitment to innovative engineering and elegant design, earning its place amongst the marque's most memorable models.