Patent ID: 7905503

Claim:
A rear vehicle body structure, comprising: left and right front floor frames disposed in a generally central region of a vehicle body and extending in a front-rear direction of the vehicle body; left and right rear frames extending rearwardly from respective rear end portions of left and right side sills disposed on respective left and right sides of the vehicle body; left and right rear-suspension mounting sections fixed to front portions of the left and right rear frames, respectively, for mounting thereon left and right rear suspensions; and left and right auxiliary members each connected at a front end thereof to an underside of the respective left or right front floor frame and connected at a rear end to the respective left or right rear-suspension mounting section, each of the left and right auxiliary members being generally in the form of a circular-section pipe and having a pipe section of a circular sectional shape and a flattened section formed on a front end portion of the pipe section, wherein the flattened section has an upper surface portion flattened downwardly and has a lower surface portion having a central region flattened concavely upwardly along an axis of the auxiliary member.