Motor vehicle with transmission system and transmission system oil pump

The vehicle has transmission oil pump (12) for pumping transmission oil in the transmission. A movable element (24) of the gearbox oil pump is coupled to shaft (22) of a planetary gear mechanism. The motor vehicle is driven by second drive shaft (30). An electric motor (26) is driven by freewheel (32) between drives coupled to the shaft (28) and gear housing (34).