This comprehensive Audi A8, S8, and A8L service and repair manual covers all models produced in 1998, including those with chassis codes 4D, 4D2, and 4D8. It provides detailed instructions and diagrams for a wide range of repair and maintenance procedures, making it an indispensable resource for both professional mechanics and DIY enthusiasts.

The manual is organized into numerous sections, each dedicated to a specific vehicle system. Dive into the intricacies of the engine, transmission, brakes, suspension, electrical system, body and frame, and more. Discover information on accessories, audio and visual systems, telematics, restraints, steering, and tire and wheel components. Detailed wiring diagrams are included to assist with troubleshooting electrical issues. This manual covers everything from routine maintenance tasks like oil changes and filter replacements to complex repairs involving engine components, transmission systems, and bodywork. No matter the task at hand, this manual equips you with the information needed to perform repairs with confidence.

The Audi A8, S8, and A8L models from 1998 represent the first generation of the flagship sedan produced by the renowned German automaker. This groundbreaking model marked a significant departure from Audi's previous design language, adopting a sleek and sophisticated aesthetic that would define the brand's future direction. The A8, standing for "Audi 8", was introduced to compete with the Mercedes-Benz S-Class and BMW 7 Series in the luxury sedan segment. The iconic aluminum spaceframe chassis, a hallmark of Audi engineering, contributed to the A8's lightweight construction and superior handling. This innovative approach, first seen in the Audi A2, made the A8 remarkably agile for its size, setting a new standard for luxury car engineering.

The 1998 A8 range offered a variety of engine options, catering to diverse driving preferences. The base model featured a 2.8-liter V6 engine, while the A8L, the extended wheelbase version, came equipped with a 3.7-liter V8. At the top of the lineup was the S8, offering a powerful 4.2-liter V8 engine capable of producing over 360 horsepower. This performance-oriented variant was designed for drivers seeking a thrilling combination of luxury and speed. Alongside the potent engine options, the A8 offered an array of high-end features, including xenon headlights, a sophisticated climate control system, and a premium sound system. The A8's commitment to comfort and innovation solidified its position as a benchmark in the luxury automotive landscape.