UNIT

A unit includes: a rotating electrical machine; an inverter located in an outer periphery of the rotating electrical machine; a first gear connected downstream of the rotating electrical machine; a second gear to mesh with the first gear; a third gear connected downstream of the second gear via a shaft; and a fourth gear to mesh with the third gear. The shaft has a portion that overlaps a stator of the rotating electrical machine when viewed in a radial direction, and the inverter has a portion that overlaps the second gear when viewed in an axial direction.