CLK320 models have full body-color bumpers, air dam, and rocker panels. Chrome is limited to the grille and door handle trim. CLK430 models receive AMG-designed Sport aerodynamic enhancements, black window trim, blue-tinted windows, and new five-spoke wheels. CLK320 models are available with a Sport package ($4,600) that incorporates AMG aerodynamic bodywork and 17-inch wheels and tires.

The CLK55's 17-inch AMG alloy Monobloc wheels are aptly named. They're very full, yet remarkably easy to not notice. But because they don't draw attention to the car, they allow a low personal profile. The CLK55 AMG does not shout "Look at me!" But when you do, you whistle. The wide-profile Michelin Pilot tires are swallowed by fenders that have virtually no flares, yet the CLK55 AMG doesn't look wide. The stance is understated and belies the power. The two-wide chrome exhaust tips that exit together under the left taillight are the only real hint of the 342 horsepower.