MOTIVE POWER TRANSMISSION DEVICE FOR VEHICLE, AND VEHICLE

A motive power transmission device for a vehicle includes a transmission that outputs motive power input from a drive source while performing gear-shifting for the motive power and a drive shaft that is coupled with the transmission and transmits the motive power from the drive source, which is output from the transmission, to a drive wheel. The transmission has a transmission mechanism unit that is arranged in a transmission casing such that an axis line extends in a vehicle front-rear direction and that performs gear-shifting for the motive power from the drive source. The drive shaft extends in a vehicle width direction on a central side of the transmission mechanism unit in the vehicle front-rear direction and is provided such that the drive shaft passes through the transmission casing.