To appropriately suppress resonance torque caused in a driving system, to prevent reduction of output torque for more than need and to suppress deterioration of driveability in a driving force controller.

Driving torque of a motor 14 is transmitted to a wheel 18 from a driving shaft 16 through a speed reducer 15 and an output shaft 17 and a wheel 20 can be driven. Transmission torque transmitted to the speed reducer 15 and the output shaft 17 can be changed by changing a current value applied to the motor 14. ECU 23 changes the current value applied to the motor 14 by considering inertia moment operated on the motor 14.