Abstract: An automobile rear body structure includes generally juxtaposed rear side frames each extending longitudinally of the body structure and having a substantially intermediate portion upwardly raised clear from an associated rear wheel axle, such that the respective side frame has a generally horizontally extending front end portion, a generally rearwardly upwardly inclined portion, a generally rearwardly downwardly inclined portion and a generally horizontally extending rear end portion. A rear floor panel is mounted on the rear side frames and includes a floor panel portion laid on the horizontally extending front end portions of the side frames, a raised panel portion partially laid on the rearwardly upwardly inclined portions of the side frames, and a rear package tray portion extending horizontally in a direction rearwardly of the body structure and above the rearwardly upwardly and downwardly inclined portions of the side frames.