A vehicle control system is configured to include a motive power unit that includes an engine and a rotating electrical machine, a power supply device that is connected to the rotating electrical machine, a pump unit that includes an electric oil pump and a mechanical oil pump for cooling the rotating electrical machine, and a control device. The control device is configured to include a carrier frequency determination unit, a rotating electrical machine determination unit, a vehicle required traveling state determination unit, a motive power unit operation mode determination unit that makes a determination on the operation mode of the motive power unit, and an EOP operation control unit that controls the operation of the electric oil pump on the basis of these determinations.