All videos for the Audi A6 with driving report, buying advice, long term test and 0-100km/h acceleration test. These facts you should know before you buy or lease the motor vehicle..The Audi A6 C8 Avant 45 TFSI design quattro S tronic has a gross list price of 76770 €. It accelerates from 0 to 100 km/h in 6.2 seconds. At 250 km/h he reaches his top speed. At 250 km/h he reaches his top speed.