The sleek, E-Class-derived CLS "four-door coupe" joined the Mercedes lineup in 2006 as an all-new model. Last year, Mercedes added a CLS63 AMG, which comes with a 507-horsepower engine.
Both models return for 2008, the CLS550 with its 382-hp engine. This year, both add standard satellite radio and 18-inch, seven-spoke wheels to their extensive lineup of gear.
All CLS models are equipped with Mercedes' PRE-SAFE collision preparation system, which was originally offered on the S-Class sedan. All models also get a premium Harmon/Kardon audio system with six-disc CD changer.
Both CLS-Class engines drive the rear wheels via a seven-speed automatic transmission. An Airmatic suspension, Sensotronic Brake Control, traction control, Automatic Slip Program, and Electronic Stability Program are included. Side-impact and side-curtain airbags, and active front head restraints, are standard.
The CLS also comes with heated and ventilated multi-contour seats, adaptive cruise control and headlamps, in addition to a power trunk closer. All audio systems have an interface for an Apple iPod or MP3 player.
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