B5 S4 refers to a car manufactured by
AUDI(VW) between 1997-2002.. It comes in a station wagon (Avant) or 4 door sedan equipped with a twin turbo V6.. It is an engineering masterpiece due to it's timeless
Audi shape, Quattro all wheel drive
system, and aftermarket upgrade potential.. This is one of the most expensive cars on the road to maintain; and owning one will ultimately turn you into a 2.7t master-mechanic..