The A4, specifically the third generation (B6) platform introduced in 2002, represents a commitment to sophisticated design, engineering quality, and refined driving dynamics. Positioned as a premium compact executive sedan and wagon, it competed with established luxury marques by offering a clean aesthetic, a high-quality interior with excellent fit and finish, and a balanced ride and handling profile. Available with front-wheel drive or the renowned Quattro all-wheel drive system, the A4 offered a range of efficient yet capable powertrains, including a 1.8-liter turbocharged four-cylinder, a 2.0-liter naturally aspirated four-cylinder, and a potent 3.0-liter V6. This generation also marked the introduction of a signature Singleframe grille, enhancing its distinctive road presence.

This comprehensive workshop service and repair manual is designed to provide detailed guidance for the maintenance, diagnosis, and repair of the A4 (B6). It covers all essential vehicle systems, including the mechanical and performance aspects of the engine, manual and automatic transmissions, drivetrain, suspension, brakes, steering, and electrical systems. Furthermore, the manual details procedures for body and interior work, climate control, and safety systems. Owners, mechanics, and technicians will find in-depth instructions for routine maintenance, troubleshooting common issues, performing repairs, and understanding technical specifications, ensuring the longevity and optimal performance of the vehicle.