The platform supports front or rear traction with one or two electric motors, the batteries being integrated into the chassis, below the floor level. (mercedesblog.com)
Even once rear traction has been lost, and the wheel have started to spin, the M3 seems to build speed in a remarkable way. (evo.co.uk)
Must be because front tires are narrower than rear tires, and light weight engine causes center of gravity to be closer to rear traction wheels. (carsdesk.com)