The models in the GLK range come equipped with the highly sophisticated 7G-TRONIC automatic transmission (standard for 4MATIC, optional in GLK 220 CDI BlueEFFICIENCY). Thanks to its seven forward gears and the resulting smaller jumps in engine speed, 7G-TRONIC promises extra-smooth gearshifts with no perceptible interruption in power flow. Plus, it can also execute multiple downshifts whenever you wish to pick up speed particularly rapidly. What's more, the transmission has been optimised for the all-wheel-drive system. The result: maximum driving pleasure for you.