A hybrid electric vehicle runs by torque of an internal combustion engine (11, 111) and torque of an electric motor (13, 116) that are output through a transmission. The transmission comprises a first shaft (21, A113) that is connectable to the internal combustion engine (11, 111), a second rotation shaft (22, A114) that is connectable to the electric motor (13, 116), and a third rotation shaft (23, A112) that is connected to drive wheels (14, 115). A plurality of combinations of gears that are selectively applied are provided between the first rotation shaft (21, A113) and the third rotation shaft (23, A112), and between the second rotation shaft (22, A114) and the third rotation shaft (23, A112). A variety of power transmissions to the drive wheels (14, 115) are made possible by further providing a clutch (64, 151) that connects the first rotation shaft (21, A113) and the second rotation shaft (22, A114).