The 1991 Audi 100 represents a significant entry in the executive sedan segment, embodying Audi's reputation for premium quality and advanced engineering. Built on the robust C4 platform, this model is characterized by its aerodynamic styling and high-quality interior materials, offering a comfortable and refined driving experience. Available with front-wheel drive or the renowned quattro all-wheel drive system, and powered by a range of engines including a 2.8L V6, the Audi 100 was designed to compete with leading luxury vehicles of its era, emphasizing performance and sophisticated design.

This comprehensive factory service manual provides detailed guidance for the maintenance, repair, and diagnostics of the 1991 Audi 100. It covers all major systems, including the powertrain, chassis, body, and electrical components, offering in-depth procedures from routine scheduled maintenance to complete component overhauls. The manual is an essential resource for owners, technicians, and mechanics, detailing technical specifications, troubleshooting steps, and specific maintenance requirements to ensure the optimal performance and longevity of the vehicle.