The optional COMAND APS multimedia system with high-resolution 16.5 cm colour display and hard-disk navigation not only guides you to your destination using 3D maps with bird eye’s view, showing altitude, compass direction and steering-wheel angle, it also entertains you as you drive. It features a navigation system with integrated digital radio and CD/DVD player for audio and video. It also enables you to operate the optional Harman Kardon® Logic 7® surround-sound system, the optional DVD changer and the telephone. A TV tuner for analogue/digital TV reception is also available as an option in combination with COMAND APS.

The navigation system works with the Global Positioning System (GPS) and a hard disc on which the European road network is stored. An additional service offered in Germany and some other European countries is dynamic route guidance, which uses traffic information provided by radio stations to guide you around traffic jams/tailbacks where there is an alternative route.

The DVD video function is proof that M-Class multimedia systems are more than just a pipe dream. The optional media interface with consumer cable set and UCI connection lets you connect COMAND APS directly to any USB data source to play music from your MP3 player, for example. If you have stored your favourite music on a 4 GB MUSIC REGISTER card or SD card, the M-Class has the matching socket. And a Bluetooth® interface ensures safe and convenient mobile phone usage.

Radio, navigation device and telephone obey your every word – you can operate them with the LINGUATRONIC voice-operated control system (included in Audio 50 APS with DVD changer and in COMAND APS).

The optional Harman Kardon® Logic 7® surround-sound system offers a superb music experience. Its 610 W output delivers excellent sound quality to the M-Class. Twelve high-performance speakers and Dolby® Digital 5.1 technology convert the interior into your very own concert hall – wherever you are sitting. And you'll enjoy the kind of functions you won't find at a live concert. For example, surround-sound output can be adjusted individually, either to the front, middle or rear sections – or throughout entire passenger compartment.
High-tech developments such as the DSP amplifier add a real boost to the surround-sound system and provide a true audio sensation inside the vehicle.

Premium entertainment for rear-seat passengers is provided by the rear-seat entertainment system. It is equipped with two 20.3 cm screens on the front-seat head restraints, wireless headphones and a remote control unit. It also features connections for a DVD player or games console. The optional TV tuner even allows for in-car television viewing.