Do you want to buy the Audi S4 Biturbo car? If yes, here we provide the buyer's guide for you. Audi S4 Biturbo comes with a six-speed manual or tiptronic transmission, permanent four-wheel drive, and a six cylinder turbo-charged engine with the very latest five-valve per cylinder technology, and superb build quality. The Audi S4 biturbo was first released in Europe in 1998, with North America and Canada being introduced to the model in 2000, so there are actually two different models available in Europe.
