Here you will find a manual for the repair and maintenance of German cars Audi A6 of the second generation (C5), produced from 1997 to 2004. Detailed instructions written in simple language are accompanied by visual illustrations. This will allow you to repair the car yourself or check the auto repairman.
A very wide range of engines was installed on the Audi C5, both diesel and gasoline. Here you will find descriptions and instructions for the following engine modifications:
4-cylinder petrol: from 1.8 to 2.0 liters, from 125 to 150 hp.
6-cylinder petrol: volume from 2.4 to 4.2 liters, power from 130 to 340 hp
4-cylinder diesel: all 1.9 liters, power from 110 to 130 hp
6-cylinder diesel: all 2.5 liters, power from 150 to 180 hp.
For detailed specifications and their codes see here.