VEHICLE LOWER STRUCTURE

A vehicle lower structure includes: a battery pack; a cross member; a battery side frame; and a side sill, when viewed in the vehicle width direction, at least a part of the cross member overlaps the side sill, and at least a part of the battery side frame overlaps the side sill, the cross member has a closed cross-sectional shape or an open cross-sectional shape in a cross section perpendicular to the vehicle width direction, a thickness of an outer portion of the cross member is smaller than a thickness of an inner portion of the cross member, the battery side frame has a closed cross-sectional shape or an open cross-sectional shape in a cross section perpendicular to the vehicle front-rear direction, and a thickness of an outer portion of the battery side frame is smaller than a thickness of an inner portion of the battery side frame.