"...the CLS63 has lots of grip, decent steering, and is very entertaining once the traction control is turned off and the throttle is mashed. It isn't quite as sweet a chassis as a BMW M5's, but the CLS has the advantage of a fine automatic transmission in place of the M5's clunky Sequential Manual Gearbox and a torquier, more compelling engine. Only serious AMG-heads are going to be able to spot the difference between this one and the CLS55. Discreet 6.3 AMG badges on the flanks and tail are the only real external clues, while there is a new instrument cluster and a fabulous, race-car-like steering wheel. Otherwise, the gorgeous CLS shape and lush interior remain. Why mess with success?"