RS4 side emblem from a 2007 Audi RS4. The RS4 is the second RS model to come to the United States.
The RS4 is the second RS model to come to the United States. The first was the 450 hp twin turbo V8 RS6, which was imported for 2003 only.
The RS4 is the also Audi's first normally aspirated RS model. The rev-happy RS4 traces its roots back to 1994, when Audi introduced its RS line via a collaboration with Porsche.
Audi sent its 80 wagon (the predecessor to the A4) to Porsche, which installed a 311 hp, 2.2 liter turbocharged five cylinder engine and 911-style brakes, wheels and side mirrors. The result was a 163-mph grocery getter, the RS2.
For its next RS model, Audi introduced the RS4 badge on a version of the first generation A4 wagon.
This time, Audi chose the British firm Cosworth rather than Porsche for the project, not that it much mattered, as the RS4 was another rocket ship.
Its a twin-turbo, 2.7 liter V6 developed 375 hp and 325 ld ft of torque, enough to launch the RS4 to 60 mph in less that five seconds and on to 124 mph in just seventeen seconds.
The original RS4 doesn't have the RS2's cult following in Europe, but it set the stage for the second-generation RS4, the one that we've enjoyed since 2006 in the United States.
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