A vehicle drive system provided with: an input member drivingly coupled to an internal combustion engine; a transmission that changes a speed of rotation transmitted from the input member and that then transmits the rotation to a transmission output member; a rotating electric machine drivingly coupled to the transmission output member; a first output member drivingly coupled to a rear wheel; a second output member drivingly coupled to a front wheel; a transfer that distributes the rotation transmitted from the transmission output member between the first output member and the second output member; and a case that houses the transmission, the rotating electric machine, and the transfer, wherein the transfer is located on an axial first side relative to the transmission, the axial first side being one side in an axial direction, the rotating electric machine is located coaxially with the transmission output member, between the transmission and the transfer in the axial direction, the case is provided with a transmission accommodation chamber that houses the transmission, and a rotating-electric-machine accommodation chamber that houses the rotating electric machine, the transmission accommodation chamber and the rotating-electric-machine accommodation chamber are located adjacent to each other in the axial direction, and the case is provided with a transfer accommodation chamber that houses the transfer, characterized in that the rotating-electric-machine accommodation chamber and the transmission accommodation chamber communicate with each other in a manner that allows oil to circulate between the rotating-electric-machine accommodation chamber and the transmission accommodation chamber, and the rotating-electric-machine accommodation chamber and the transfer accommodation chamber are separated from each other in an oil-tight manner. an input member drivingly coupled to an internal combustion engine; a transmission that changes a speed of rotation transmitted from the input member and that then transmits the rotation to a transmission output member; a rotating electric machine drivingly coupled to the transmission output member; a first output member drivingly coupled to a rear wheel; a second output member drivingly coupled to a front wheel; a transfer that distributes the rotation transmitted from the transmission output member between the first output member and the second output member; and a case that houses the transmission, the rotating electric machine, and the transfer, wherein the transfer is located on an axial first side relative to the transmission, the axial first side being one side in an axial direction, the rotating electric machine is located coaxially with the transmission output member, between the transmission and the transfer in the axial direction, the case is provided with a transmission accommodation chamber that houses the transmission, and a rotating-electric-machine accommodation chamber that houses the rotating electric machine, the transmission accommodation chamber and the rotating-electric-machine accommodation chamber are located adjacent to each other in the axial direction, and the case is provided with a transfer accommodation chamber that houses the transfer, characterized in that the rotating-electric-machine accommodation chamber and the transmission accommodation chamber communicate with each other in a manner that allows oil to circulate between the rotating-electric-machine accommodation chamber and the transmission accommodation chamber, and the rotating-electric-machine accommodation chamber and the transfer accommodation chamber are separated from each other in an oil-tight manner.