The 2006 Audi A4 Quattro, based on the MLB platform, represents a premium compact executive sedan known for its sophisticated design and performance-oriented engineering. This B7 generation model offers a sleek exterior, a driver-focused interior with high-quality materials, and the signature quattro all-wheel-drive system for enhanced traction and stability. Powered typically by a 2.0-liter turbocharged FSI engine producing 200 horsepower and 207 lb-ft of torque, it delivers a compelling driving experience, competing with established luxury brands. Its robust safety features, including standard ABS and ESP, along with available advanced airbag systems, contribute to its reputation for build quality and occupant protection, reflecting Audi's heritage of innovation and engineering excellence. This comprehensive online service and repair manual software provides detailed coverage for the 2006 Audi A4 Quattro. It encompasses all major vehicle systems, including engine mechanicals and management, drivetrain, suspension, steering, brakes, and the electrical system. The manual details scheduled maintenance procedures, component replacement, and advanced diagnostic techniques, offering OE-level information essential for professional technicians and advanced DIY enthusiasts. Users will find specific guidance on fluid specifications, torque values, and common issues, all presented in English within a web-based software format for accessible and in-depth technical support to ensure optimal maintenance and repair of the vehicle.