Audi S4
Audi's quattro four-wheel-drive system was standard on the C4 S4/S6; a first-generation Torsen-based system which used the "T-1" automatically biasing centre differential (ATB) was used on vehicles equipped with manual transmissions, while a transfer box based system was used on vehicles equipped with an automatic transmission.
Audi Q5
German models include standard 7-speed S tronic transmission for all V6 models. 8-speed Tiptronic is an option for Q5 2.0 TFSI quattro (211 PS).