An electric vehicle includes: an electric motor; an engine; a power transmission device; a drive casing that houses a drive apparatus including the electric motor and the power transmission device; a first electrical casing; and a second electrical casing. The drive casing, the first electrical casing and the second electrical casing cooperate to constitute a mechanical-electrical integrated unit. The drive casing has a first wall surface, a second wall surface, a third wall surface, a fourth wall surface, a fifth wall surface and a sixth wall surface. The engine is disposed on the first wall surface, and is connected to an input shaft of the power transmission device on a side of the first wall surface. The first electrical casing and the second electrical casing are separately disposed on respective two of the second wall surface, third wall surface, fourth wall surface, fifth wall surface and sixth wall surface.