The Audi 90 1988-1992 Service Repair Manual is your comprehensive guide to maintaining and repairing your vehicle. This detailed manual covers a wide range of topics, providing you with the knowledge and instructions you need to perform various tasks yourself. From general information and specifications to technical features and descriptions, you'll find everything you need to understand your Audi 90. The manual also includes detailed troubleshooting sections, covering electrical and fuel systems, power units, lower units, bracket units, and maintenance procedures. The step-by-step instructions and clear illustrations make it easy to follow along, even for novice mechanics. With this manual by your side, you'll have access to the information you need to keep your Audi 90 running smoothly for years to come.

The Audi 90, produced from 1988 to 1992, marked a significant step forward in Audi's evolution, transitioning from the traditional, boxy designs of the 80s to a more aerodynamic and refined aesthetic. This compact executive sedan was offered in two distinct body styles: a four-door saloon and a five-door hatchback, known as the "Avant." The 90 was built upon the Audi 80 B3 platform, sharing its chassis and many components, but differentiated by its more upscale interior, featuring plush leather upholstery, wood-grain trim, and a focus on driver comfort. Beyond its refined aesthetics, the 90 introduced numerous innovative features, setting a new standard for the segment.

Powertrain choices were diverse, ranging from fuel-efficient four-cylinder engines to powerful V6 options, all paired with either a five-speed manual or a four-speed automatic transmission. The 90 also introduced Audi's renowned quattro all-wheel-drive system, offering superior handling and traction in challenging conditions. Despite its relatively short production run, the Audi 90 left a lasting impression on the automotive landscape, pioneering advancements in safety, comfort, and performance that would define the brand's future direction. Notably, it was one of the first vehicles to feature the revolutionary driver airbag system, further solidifying Audi's commitment to safety innovation. The 90's success paved the way for the highly acclaimed Audi A4, which ultimately replaced it, carrying forward the legacy of this innovative and sophisticated compact executive sedan.