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 (L1) relative to the transmission , the axial first side (L1) being one side in an axial direction (L), the rotating electric machine is located coaxially with the transmission output member , between the transmission and the transfer in the axial direction (L), the case is provided with a transmission accommodation chamber (S2) that houses the transmission , and a rotating-electric-machine accommodation chamber (S1) that houses the rotating electric machine , the transmission accommodation chamber (S2) and the rotating-electric-machine accommodation chamber (S1) are located adjacent to each other in the axial direction (L), and the case is provided with a transfer accommodation chamber (S3) that houses the transfer , characterized in that the rotating-electric-machine accommodation chamber (S1) and the transmission accommodation chamber (S2) communicate with each other in a manner that allows oil to circulate between the rotating-electric-machine accommodation chamber (S1) and the transmission accommodation chamber (S2), and the rotating-electric-machine accommodation chamber (S1) and the transfer accommodation chamber (S3) 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 (L1) relative to the transmission , the axial first side (L1) being one side in an axial direction (L), the rotating electric machine is located coaxially with the transmission output member , between the transmission and the transfer in the axial direction (L), the case is provided with a transmission accommodation chamber (S2) that houses the transmission , and a rotating-electric-machine accommodation chamber (S1) that houses the rotating electric machine , the transmission accommodation chamber (S2) and the rotating-electric-machine accommodation chamber (S1) are located adjacent to each other in the axial direction (L), and the case is provided with a transfer accommodation chamber (S3) that houses the transfer , characterized in that the rotating-electric-machine accommodation chamber (S1) and the transmission accommodation chamber (S2) communicate with each other in a manner that allows oil to circulate between the rotating-electric-machine accommodation chamber (S1) and the transmission accommodation chamber (S2), and the rotating-electric-machine accommodation chamber (S1) and the transfer accommodation chamber (S3) are separated from each other in an oil-tight manner. <EOS>