Vehicle rear portion structure

A vehicle rear portion structure comprising:

• a pair of rear portion structural members spaced apart in a vehicle width direction;
• a pair of rear side members spaced apart in the vehicle width direction;
• and
• a cross-connection member connecting the rear portion structural members to each other, wherein:
• each of the rear portion structural members is a hollow member in which a body portion, a tower portion, and a suspension member portion are integrally cast;
• the body portion includes a front end connected to a rear pillar and a rear end connected to a rear side member of the rear side members;
• the tower portion includes a tower shape with a downward opening so as to receive a part of a suspension device, and stands upward from the body portion;
• the suspension member portion includes a front end connected to a rocker and extends downwardly from the body portion to support the suspension device;
• the rear side member and the cross-connection member are tubular extruded members;
• and
• the cross-connection member includes a connecting portion extending in the vehicle width direction in a portion of a vehicle that is rearward of the rear portion structural member, and a pair of arm portions extending forward in a vehicle front-rear direction from both ends of the connecting portion in the vehicle width direction and connected to the tower portions, the cross-connection member being substantially U-shaped and projecting rearward in the vehicle front-rear direction in a plan view.