The RS 4 Cabriolet shares the same high-revving 4.2 V8 FSI engine found in the RS 4 sedan. It produces 420 hp at 7,800 rpm and 317 ft-lbs. of torque at 5,500 rpm. Like the sedan, the Cabriolet will only be available with a six-speed manual and quattro® all-wheel drive featuring the asymmetrical dynamic torque split. Like the sedan, the Cabriolet will have 19” RS 4-style alloy wheels with 255/35/19 performance tires, a four-link front and trapezoidal-link rear sport-tuned suspension with Dynamic Ride Control (DRC), and 14.4” front and 12.8” rear brake rotors.
The RS 4 sedan also gets some new and unique features for 2008. Two new option packages, the Titanium package and Audi exclusive package, will be available. The $750 Titanium package consists of titanium colored 19” RS 4-style alloy wheels, black front grille, black side window moldings, black interior headliner, and piano black interior trim. The $3,800 Audi exclusive package has Crimson red leather seat centers (black leather side bolsters and head rests) and door trim, contrasting red seat piping, red stitching on the shift boot and steering wheel, piano black interior trim, carpeted floor mats with RS 4 logo and contrasting piping, and Audi exclusive badging. Sirius satellite radio and Bluetooth will become standard equipment on the RS 4 sedan.