The GLC350e will let you know its German. Using the C350e as a guide we can assume the GLC350e will come with at LEAST 5 Transmission modes and 4 Hybrid modes. Thats if they don't add in more because its 'off roadable'
Hybrid Modes:With the transmission in Economy mode, engine output is calibrated for maximum mpg, plus the powertrain is optimized to prefer coasting for even better mpg. At the same time, the navigation system can even help preserve a level of battery charge according to the route you’ve selected. With the transmission in Comfort mode, the C350e behaves just like a conventional hybrid, and the powertrain will disengage for coasting at speeds up to 80 mph. In Sport mode, you get full-time engine engagement, full turbo boost, sporty gear changes, and a sportier suspension calibration. In Sport Plus mode, the gear changes get quicker and the stability control becomes more permissive. And in Individual mode, you can set your own combination of behaviors and suspension calibration.
2016 Mercedes-Benz C350e Plug-In Hybrid ReviewBut wait, you’re not done yet, because the Mercedes-Benz C350e lets you determine the way that you use up the juice in your battery pack. First, there’s the normal hybrid mode, so the engine is silent at a stoplight, EV power takes care of initial acceleration, and regenerative braking is fully engaged. In E-mode, only EV power is available. In E-save, EV power is only available to a certain extent because the car places a priority on preserving the charge status of the battery. And finally, Charge mode enables the battery to be charged by the engine, not just by regenerative braking.