This manual covers the A4, Fourth Generation (B7 chassis code), produced from 2004 to 2008. The A4 is recognized as a compact executive sedan and wagon, known for its premium, sporty, and technologically advanced positioning. It features elegant design, clean lines, and premium interior appointments, reflecting a commitment to sophisticated chassis dynamics, the available Quattro all-wheel-drive system, and well-engineered powertrains. The 2006 A4 models are equipped with various engine options, including the 2.0 TFSI inline 4-cylinder turbocharged engine and a 3.0 V6 naturally aspirated engine, paired with either a 6-speed manual or a 6-speed Tiptronic automatic transmission. Safety is a key aspect, with features such as Electronic Stability Program (ESP), Traction Control System (ASR), and multiple airbags.

This comprehensive factory service manual provides detailed maintenance and repair procedures for the A4. It covers all major vehicle systems, including powertrain, drivetrain, chassis, and electrical systems, along with body and interior components. Within its extensive pages, you will find step-by-step instructions for routine maintenance tasks, diagnostic procedures with troubleshooting flowcharts and wiring diagrams, and in-depth repair instructions for component overhauls. Technical specifications, fluid types, and capacities are also included, ensuring accurate servicing. This manual is an essential resource for owners, technicians, and mechanics aiming to maintain, diagnose, and repair the A4 to factory standards, promoting optimal performance and longevity.