The standard audio system is a harman/kardon LOGIC7 system with Dolby Digital 5.1 surround sound, engineered specifically for the CLS. Six-hundred-ten watts of power and 14 speakers distribute sound throughout the cabin. HD Radio, a six-disc CD/DVD changer, Bluetooth audio streaming, a 10GB music register, Gracenote music database, and SiriusXM satellite radio are also included. An iPod/MP3 interface is also available.
For those with iPads, there's even a docking station available, to allow rear-seat passengers to watch movies, play music, and more. Alternatively, a rear-seat entertainment system provides 7-inch screens, DVD-watching, and audio with an integrated SD card/USB stick reader for easy access to stored media.
New for 2013 is Mercedes' optional mbrace2 telematics and connectivity suite, a comprehensive update and upgrade from the previous mbrace. With mbrace2, you can contact remote services to monitor and track vehicle usage; perform diagnostics; connect to the "cloud" with the Mercedes-Benz Apps system for functions like Google Local Search, Facebook, and Yelp; interact with the car via a mobile app; and access the mbrace Concierge service, which offers 24/7 personal assistance even when you're not with your car, for anything from securing airline tickets to making dinner reservations.
The COMAND infotainment system integrates most of the rest of the car's functions, including audio, climate control, power features, and more. With voice- and controller-driven access, the COMAND system enables easy, high-visibility control, though some of the interface elements are less than intuitive.
As with other Mercedes-Benz vehicles, the CLS Class also offers an ever-expanding range of wheel, paint, upholstery, trim, and comfort options.