The Mercedes-Benz CLS-Class is the four-door coupe that kicked off the trend of redefining a word normally reserved for two-doors. While it's not Benz's largest car, the CLS casts a formidable shadow and in some ways looks more expensive than the posher
S-Class. The CLS's cabin cossets its occupants with loads of comfort and a smooth ride, while AMG-tuned versions turn this car's performance up to 11.