The Audi A4, part of the B5 platform, represents a significant chapter in Audi's history, produced from 1997 through 2001. Available as both a Sedan (8D2) and an Avant wagon (8D5), this compact executive vehicle was engineered with a focus on quality, offering a refined ride, a well-appointed interior, and the hallmark Quattro all-wheel-drive system on many variants. It competed in a segment with established European luxury brands and garnered accolades, including multiple appearances on Car and Driver's '10Best' list. The A4 was powered by a range of engines, including turbocharged 1.8L inline-four, naturally aspirated 2.8L V6, and efficient 2.5L TDI V6 diesel options, all contributing to its reputation for solid engineering and reliable performance for professionals and families alike. This comprehensive service repair workshop manual provides in-depth guidance for all aspects of Audi A4 maintenance and repair for model years 1997-2001. It covers every major system, from engine mechanicals and electrical components to transmissions, drivetrains, suspension, steering, brakes, and bodywork. Included are detailed procedures for routine maintenance, major repairs, troubleshooting common issues, and component replacement, along with essential torque specifications and diagnostic information relevant to tools like VAG-COM. With over 1000 pages of English-language content, this manual is an indispensable resource for owners, technicians, and mechanics seeking to ensure the optimal performance and longevity of their Audi A4.