And if you need to leave the paved road for a quick excursion off the beaten track, the optional off-road engineering package (not compatible with the Sports package; not available for GLK 220 CDI BlueEFFICIENCY) will be of great service: pressing the off-road button is all it takes for the off-road driving programme to take over. It adapts the gearshift points and the accelerator pedal map to the precise requirements of the terrain. The off-road engineering package also includes the DSR downhill speed regulation function, which is also activated at the touch of a button, a technical underguard as well as a three-spoke nappa leather steering wheel with shift paddles. To keep you informed about your geographic data at all times, the off-road engineering package expands on the functionalities of the optional COMAND APS multimedia system: it tells you your bearing, altitude and GPS coordinates.