The Audi 100 is the fourth generation car and is a classic model from the entire range of Audi models. The working name of this series of cars is the "C" series. And since this is the fourth series, it is also called "C4".
In this manual you will find a manual for the operation and repair of Audi cars of this generation (1990-1994) only with gasoline engines of the following modifications:
4-cylinder: AAE 2.0 l, 101 hp; AAD 2.0 l, 115 hp; AVK 2.0 l, 115 hp
5-cylinder: AAR 2.3L, 133 hp
6-cylinder: ABC 2.6 l, 150 hp; AAN 2.8 l, 174 hp
See here for detailed specifications and descriptions of all engines.