A vehicle drive device, comprising: a first power source including an engine and a first rotating machine; a hydraulic transmission configured to transmit power from the first power source via a fluid; a first output shaft (66; 208) configured to receive the power from the first power source via the hydraulic transmission and output the power to one of a front wheel and a rear wheel; a second output shaft (72; 214) configured to output the power to another of the front wheel and the rear wheel; a torque splitter configured to distribute a part of torque input to the first output shaft (66; 208) to the second output shaft (72; 214), the torque splitter including a second rotating machine, a differential unit, and an engagement device, the differential unit including a first rotating element to which the second rotating machine is connected, a second rotating element to which one of the first output shaft (66; 208) and the second output shaft (72; 214) is connected, and a third rotating element to which another of the first output shaft (66; 208) and the second output shaft (72; 214) is connected, and the engagement device being configured to selectively connect any two of the first rotating element, the second rotating element, and the third rotating element; and an electronic control device configured to: when the engagement device is in a disengaged state, control a torque split ratio by controlling output torque of the second rotating machine, the torque split ratio being a ratio of distribution of torque between the front wheel and the rear wheel; when the engagement device is in an engaged state, control an operating point of the engine by adjusting an electrical path amount and using the second rotating machine as a second power source, the electrical path amount being a magnitude of electric power in an electrical path through which the electric power is transferred between the first rotating machine and the second rotating machine; characterized in that the electronic control device is further configured to: determine whether fuel efficiency of a vehicle is improved by operating the first rotating machine to generate electricity to such an extent that the electrical path amount becomes a desired electrical path amount for controlling the operating point of the engine to a desired operating point and driving and operating the second rotating machine as the second power source; and when the electronic control device determines that the fuel efficiency of the vehicle is improved, operate the first rotating machine to generate electricity to such an extent that the electrical path amount becomes the desired electrical path amount and drive and operate the second rotating machine as the second power source. a first power source including an engine and a first rotating machine; a hydraulic transmission configured to transmit power from the first power source via a fluid; a first output shaft (66; 208) configured to receive the power from the first power source via the hydraulic transmission and output the power to one of a front wheel and a rear wheel; a second output shaft (72; 214) configured to output the power to another of the front wheel and the rear wheel; a torque splitter configured to distribute a part of torque input to the first output shaft (66; 208) to the second output shaft (72; 214), the torque splitter including a second rotating machine, a differential unit, and an engagement device, the differential unit including a first rotating element to which the second rotating machine is connected, a second rotating element to which one of the first output shaft (66; 208) and the second output shaft (72; 214) is connected, and a third rotating element to which another of the first output shaft (66; 208) and the second output shaft (72; 214) is connected, and the engagement device being configured to selectively connect any two of the first rotating element, the second rotating element, and the third rotating element; and an electronic control device configured to: when the engagement device is in a disengaged state, control a torque split ratio by controlling output torque of the second rotating machine, the torque split ratio being a ratio of distribution of torque between the front wheel and the rear wheel; when the engagement device is in an engaged state, control an operating point of the engine by adjusting an electrical path amount and using the second rotating machine as a second power source, the electrical path amount being a magnitude of electric power in an electrical path through which the electric power is transferred between the first rotating machine and the second rotating machine;