Lurking under the C63's ridged hood is a powerful 6.3-liter that pumps out 451 hp and 443 lb.-ft. of torque. That's enough get-up-and-go to propel the four-door from 0 to 62 mph in 4.5 seconds. Its top speed is electronically limited at 155 mph.
This fire-breathing road eater looks much different than its more sedate sibling. Up front, AMG gave it a more aggressive hood, custom front grille and larger air dams. Around back, you'll find a small but slick looking rear spoiler and a large black diffuser with pronounced fins. The chrome tailpipes will make sure this speed demon pulls away on a solid note.
Inside, there are new sports seats, and the steering wheel, which is equipped with paddle-shifters, has a flattened lower section. The seven-speed gearbox has three modes—Sport, Comfort and Manual—and now automatically blips the throttle for smoother downshifts.
AMG modified the basic C-Class front suspension kinematics by designing an all-new, three-link front setup that widens the track by 35 mm and doubles the suspension's wheel-locating rigidity. As part of the AMG sports suspension calibration, the C63 also gets a larger anti-roll bar, new suspension bearings and stiffer dampers.
The C63 is also the first Mercedes with a new, three-stage ESP stability control system. In “ESP On” mode, understeer and oversteer are controlled by automatic application of the brakes and a reduction in power to the appropriate wheel. In “ESP Sport” mode, the system allows more drifting before it intervenes. “ESP Off” leaves braking and throttle control up to the driver. In both “Sport” and “Off,” full ESP kicks back the moment the brake pedal is touched; in all three modes, traction control remains active.
Look for the AMG C63 to make its retail debut in Spring 2008. —Chuck Tannert
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