The A4, produced for the 1998 model year under the B5 (8D) chassis code, represents a significant entry in the premium compact executive segment. Built on a shared platform, this generation of Audi established a strong reputation for understated elegance, refined interiors, and the availability of its renowned quattro all-wheel-drive system. Offering a blend of performance and technology, the A4 was a key player in challenging established luxury brands. Available in both Sedan and Avant (Wagon) body styles, the A4 was lauded for its build quality and was frequently recognized by publications on their '10Best' lists, underscoring its engineering and market appeal.

This comprehensive service and repair manual provides detailed, factory-level information for all A4 models of this era. It covers a vast range of systems, including powertrain, transmission, chassis, and electrical components, offering A-Z repair procedures, scheduled maintenance guidance, and diagnostic troubleshooting for common issues. The manual is designed to assist owners, mechanics, and technicians in maintaining the optimal performance and longevity of their A4, ensuring that complex repairs and routine servicing can be performed accurately and efficiently with the aid of clear instructions, torque specifications, and necessary tool requirements.