A hybrid vehicle comprising: an internal combustion engine; an electric-power generator that receives a drive force generated by the internal combustion engine and generates electric power; an electric motor that receives a supply of electric power generated by the electric-power generator and drives a drive wheel; a transmission device that transmits the drive force generated by the internal combustion engine to the drive wheel; and a case that accommodates the transmission device, the transmission device having an input gear (12a1), an output gear, an intermediate gear, and a connection/disconnection device, the input gear (12a1) being configured to receive the drive force as an input from the internal combustion engine, the output gear being configured to output the drive force to the drive wheel; the intermediate gear being configured to transmit the drive force between the input gear (12a1) and the output gear, the connection/disconnection device being configured to switch between disconnecting and connecting a path along which the drive force is inputted to the input gear (12a1), a rotational axis of the intermediate gear being positioned vertically higher than a straight line that links a rotational axis of the input gear (12a1) and a rotational axis of the output gear as seen from a direction along the rotational axes of the gears, characterized in by a second transmission device that transmits the drive force generated by the internal combustion engine to the electric-power generator, the case further accommodating the second transmission device, the second transmission device having a second input gear, a second output gear and a second intermediate gear, the second input gear being configured to receive the drive force as an input from the internal combustion engine, the second output gear being configured to output the drive force to the electric-power generator, the second intermediate gear being configured to transmit the drive force between the second input gear and the second output gear, the rotational axis of the intermediate gear being positioned vertically higher than a rotational axis of the second intermediate gear as seen from the direction along the rotational axes of the gears. an internal combustion engine; an electric-power generator that receives a drive force generated by the internal combustion engine and generates electric power; an electric motor that receives a supply of electric power generated by the electric-power generator and drives a drive wheel; a transmission device that transmits the drive force generated by the internal combustion engine to the drive wheel; and a case that accommodates the transmission device, the transmission device having an input gear (12a1), an output gear, an intermediate gear, and a connection/disconnection device, the input gear (12a1) being configured to receive the drive force as an input from the internal combustion engine, the output gear being configured to output the drive force to the drive wheel; the intermediate gear being configured to transmit the drive force between the input gear (12a1) and the output gear, the connection/disconnection device being configured to switch between disconnecting and connecting a path along which the drive force is inputted to the input gear (12a1), a rotational axis of the intermediate gear being positioned vertically higher than a straight line that links a rotational axis of the input gear (12a1) and a rotational axis of the output gear as seen from a direction along the rotational axes of the gears, characterized in by a second transmission device that transmits the drive force generated by the internal combustion engine to the electric-power generator, the case further accommodating the second transmission device, the second transmission device having a second input gear, a second output gear and a second intermediate gear, the second input gear being configured to receive the drive force as an input from the internal combustion engine, the second output gear being configured to output the drive force to the electric-power generator, the second intermediate gear being configured to transmit the drive force between the second input gear and the second output gear, the rotational axis of the intermediate gear being positioned vertically higher than a rotational axis of the second intermediate gear as seen from the direction along the rotational axes of the gears.