Top Definition
2000-2002 An Automobile that is made by Audi. It is a 2.7 litre 90 degree V6 with 5 valves per cylinder. Standard with 2 "Twin" turbochargers, hence the name biturbo. 0-60 on a 6 speed transmission is under 6 seconds. The S4 is equipped with a "quattro" 4 wheel drive system. It is also easily modifiable, and has plenty of parts out on the market. BMW M3 owners.. you have been warned.
S4's are often seen on Freeways passing other automobiles at speeds above 120MPH.
by Guy March 07, 2005
Automobile produced by AudiAG. In its most recent iteration, introduced in the winter of 2003 as a 2004 model, the s4 is equipped w./ a 300+ bhp V8 engine, propelling this stealth car from 0-60 in near 5 seconds with quarter mile times estimated in the range of 13 seconds. An excellent automobile crafted with the German prowess which has come to be well associated with AudiAG. A classic in the making.
Jesus Christ - at first glance that looked like an A4, but then he fucking schooled that CLK55AMG. Wow. (I actually did this, ;) ... MB rates their models to quick ... their tranny programs are fucked up)
by Dr. Night December 15, 2003

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