The 2010 C-Class equipment list leaves few major options on the table.
All C-Class sedans come to the United States with Bluetooth connectivity; a power sunroof; dual-zone climate control; power windows/locks/mirrors; a leather-wrapped steering wheel; power front seats; and cruise control. Kelley Blue Book mentions both "a motorized LCD display" and "dual-zone automatic climate control." ConsumerGuide lists other impressive standard features to be a "power sunroof, AM/FM/weatherband/CD/MP3 player, digital-media player connection, satellite radio," and a Bluetooth "wireless cell phone link."
Optional equipment includes a voice-activated navigation system with a COMAND controller wheel; Sirius Satellite Radio; a 4GB music hard drive; a media interface for iPods and other MP3 players; a DVD entertainment system; a panoramic sunroof; heated seats; xenon headlamps; a keyless ignition system; trunk- or roof-mounted spoilers; and power lumbar adjustments for the seats. Kelley Blue Book notes that "optional on the C300 are auto-dimming power folding side mirrors, heated front seats, SIRIUS Satellite Radio," and "rain-sensing wipers."
Cars.com mentions the "impressive Harman Kardon six-CD/DVD surround sound system," but is slightly put off by having to pay "extra for folding seats," an optional feature on the Mercedes-Benz C-Class that they say is "standard in the least-expensive of cars." Edmunds raves the multimedia package transforms the C-Class "into a mobile sound studio-and movie theater. A built-in hard-drive not only powers the navigation system, it can also store up to 4GB." Even more unusual is the fact that on Mercedes-Benz's 2010 C-Class, "with the car in park, the car can also play DVDs through the pop-up LCD screen and superb Logic 7 surround-sound system," according to Edmunds. The pop-up screen is somewhat atypical; when it's not installed, the radio LCD screen sits in the same position, behind a pop-up cover that looks a little out of place in a $40,000 sedan.
As for the audio and navigation controller, Edmunds reports the latest version of COMAND "combines physical dash buttons with a mouselike controller" to give the driver access to functions without shifting eyes from the road. But while ConsumerGuide compliments the C-Class' "clearly marked buttons" for the climate controls, they feel that "audio controls are more complicated" and "the navigation system itself is difficult to use, with many controls buried in a series of menus and submenus."