Here is a video of one of the world’s fastest Audis – the tuned S4 B5. It is powered by a R6 24v longitudinally mounted engine with a Precision 67mm turbo and Haltech engine managment running E85 fuel. It develops over 800HP on the four wheels, which is enough for setting an impressive time of 9.616 seconds at 1/4 mile drag race with terminal speed of 246 km/h (153 mph).
