Vehicle trailer

The invention relates to a vehicle trailer (2) for a towing vehicle (1), in particular in the form of a semi-trailer (2) or a drawbar trailer, with at least one electrical drive system component (4) integrated into the vehicle trailer (2), which can be coupled to an electrical drive system (3) of the towing vehicle (1). The invention further relates to a vehicle combination with such a vehicle trailer and such a towing vehicle.