The normal (and already wonderful) CLK500 uses a 5.0-liter 302-hp V8 with 340 lb-ft of torque from 2700 to 4250 rpm for a 0-to-60-mph time of 5.9 seconds.

OUR TAKE: For all its Mercedes-Benz sensible-ness, this baby is all about playing hooky and pushing the limits. Punch the accelerator, and power comes on in a rush, with the distinct feel of ...

The CLK500 Cabriolet I tested develops 302 horsepower at 5,600 revolutions per minute and 339 pound-feet of torque between 2,700 and 4,250 rpm. Still, the CLK500 could use more low-end torque.