See also:

Starting procedure with the SmartKey
- To start a gasoline engine: turn the SmartKey to position 3 in the ignition lock and release it as soon as the engine is running. - To start a diesel engine: turn the SmartKey to position 2 ...

4MATIC (permanent four-wheel drive)
4MATIC ensures that all four wheels are permanently driven. Together with ESP® and 4ETS, it improves the traction of your vehicle whenever a drive wheel spins due to insufficient grip. WARNI ...

Styling
The 2012 M-Class retains many of the previous generation's styling cues, like a wide front grille and forward-swept C-pillars, but the new design looks more substantial and imposing. Contributing ...