The 2009 Mercedes-Benz CLS models come with most luxury features standard, with only a few optional.
Cars.com notes that for 2009, Mercedes-Benz offers "a few more standard options, including satellite radio and larger wheels." Kelley Blue Book reports the CLS550 offers "all the [standard] equipment you might expect of a sedan costing around $70,000." The list includes a sunroof, four-zone climate control, an LCD control center, and Tele Aid, which provide emergency and directional services (similar to OnStar).
One feature of the 2009 Mercedes-Benz that is not terribly helpful, according to many sources noted by the experts at TheCarConnection.com, is the Mercedes-Benz COMAND—Cockpit Management and Navigation Device—system, which Edmunds deems "largely unintuitive." The wheel-driven controller that operates the navigation, climate, and audio settings is part a generation of similar controls from Audi and BMW that have met with universal dislike in reviews read by TheCarConnection.com.
"Noteworthy options" in the Mercedes-Benz 2009 CLS, according to Kelley Blue Book, include "active HID headlamps, adaptive radar cruise control, front/rear park assist, heated and ventilated front seats, [and] air support front seats." They also mention that the Mercedes-Benz 2009 CLS can be loaded with a "Harman/Kardon digital surround-sound system, six-disc CD changer, hands-free voice control system, Keyless Go unlock and start and a rear-window sunshade."