The 1999 Audi A4, based on the B5 chassis, represents a significant entry into the compact executive segment, known for its refined interior and solid build quality. Available as a sedan or wagon, this model offered discerning buyers a balance of performance and premium features, competing with established marques like BMW and Mercedes-Benz. It was powered by either a 1.8L turbocharged inline-4 engine (AEB, ATW, AWM) producing 150 horsepower, or a 2.8L V6 engine (AHA, APB) delivering 190 horsepower. Both front-wheel drive and Audi's signature Quattro all-wheel drive systems were available, enhancing its appeal to a wide range of drivers.

This comprehensive professional service and repair manual provides in-depth coverage for the 1999 Audi A4 (B5 Chassis), encompassing all aspects of maintenance, troubleshooting, and repair. With over 1500 pages of detailed information, it covers engine mechanicals and management for both 1.8L Turbo and 2.8L V6 engines, as well as transmissions, suspension, brakes, steering, electrical systems, body, and HVAC. The manual includes step-by-step procedures for routine maintenance, complex repairs, and diagnostic fault code interpretation, making it an essential resource for owners, mechanics, and technicians seeking to maintain and restore their vehicle's optimal performance and reliability.