The 1999 Audi A4 (B5) represents a significant entry in the premium compact executive segment, known for its sophisticated design, refined interior, and the availability of the renowned Audi Quattro all-wheel-drive system. This generation, a facelifted version from its initial 1996 introduction, competed directly with established luxury brands, offering a compelling blend of performance and comfort. Key features include a robust chassis, a choice of efficient four-cylinder turbocharged or smooth V6 engines, and a driver-focused cabin that emphasized quality materials and ergonomic layout. The A4 established Audi as a strong contender, earning accolades such as Car and Driver's 10Best list, underscoring its engineering excellence and market appeal.

This comprehensive workshop service and repair manual provides detailed technical information for all mechanical and electrical systems, bodywork, and diagnostics of the 1999 Audi A4 (B5). It covers essential maintenance procedures, including scheduled servicing, fluid changes, and component replacements, alongside in-depth troubleshooting guides and step-by-step repair instructions for every major system, from the engine and drivetrain to brakes, suspension, and electrical components. The manual also includes critical specifications, torque values, and diagnostic flowcharts, making it an indispensable resource for owners, mechanics, and technicians seeking to maintain, diagnose, and repair this vehicle effectively and accurately.