The A4 Quattro, produced from 2002 onwards as part of the B6 (Typ 8E) generation, represents a premium compact executive sedan and wagon renowned for its sporty yet refined European styling and driving dynamics. Engineered with a focus on performance and luxury, this model features the distinctive Quattro all-wheel drive system, available with a choice of potent powertrains including a 1.8L Turbo, a 2.0L FSI, or a 3.0L V6 engine, paired with either a 5-speed manual or Tiptronic automatic transmission. Its robust construction, shared with the Volkswagen Passat B5.5 platform, and advanced safety features like standard Anti-lock Braking System (ABS), Electronic Brake-force Distribution (EBD), and Electronic Stability Program (ESP), alongside frontal and side-curtain airbags, underscore its commitment to driver and passenger well-being, positioning it as a strong competitor in its segment. This comprehensive online service manual provides in-depth coverage for the A4 Quattro (B6, 2002), serving as an essential resource for owners and technicians. It details critical service and repair procedures, covering the engine, drivetrain, chassis, and electrical systems, including specific information on the 1.8T, 2.0L FSI, and 3.0L V6 engines, as well as the Quattro AWD and transmission systems. The manual also includes essential maintenance schedules, troubleshooting guides, diagnostic procedures, and technical specifications, ensuring accurate upkeep and efficient repair. With factory-derived OE material, this digital manual offers the precision needed to maintain the vehicle's performance and longevity.