The interior of the 2008 Mercedes-Benz C-Class has been refined and enlarged, with unique trims for the Luxury and Sport models. The cabin is roomier, with increases in leg, hip and shoulder room. The control layout and design is logical and attractive. A power moonroof, Bluetooth connectivity, eight-way power front seats, dual-zone automatic climate control and seven airbags are all standard. Sport models are trimmed in aluminum, while Luxury C-Class interiors use burl walnut highlights. A large single knob mounted on the center console controls various functions, similar to BMW’s i-Drive system. Optional features include a Command APS multimedia system, containing a four-gigabyte music storage server, DVD player, voice activation and navigation unit.