For the 2002 through 2003 model years, the only years in which the Audi produced the RS6 in the United States, the car offered a 450-horsepower engine, all-wheel drive, 5-speed transmission, wood trim and perforated leather on the steering wheel and shift knob. The car has two intercooled turbochargers and an eight-cylinder, 4.2-liter engine that makes 415 foot-pounds of torque. The RS6 goes from zero to 60 mph in 4.6 seconds and, from a stop, can cover one-quarter of a mile in 14.1 seconds.
The RS6 has a top speed of 155 mph, and it averages 11 miles per gallon in the city, 23 on the highway and 16 mpg overall. It has 18-inch aluminum wheels, dual exhausts and a spoiler. The car's front brakes utilize eight-piston calipers on 13.2-inch rotors on the front two wheels, and single-piston calipers on 13.2-inch rotors for the rear. This car utilizes a two-piece rotor system consisting of a friction attached to a central hub. Audi claims this design improves rotor alignment and cooling, while reducing weight.
The car has a unique suspension system that mechanically adjusts the stiffness of its shocks while cornering to help keep the car stable. The car has hydraulic lines connecting opposite shocks, so that as pressure naturally decreases in extended shocks, more fluid flows to compressing shocks, stiffening them.