Automotive rear vehicle body structure

Abstract

Provided is an automotive rear vehicle body structure which increases the amount of energy that can be absorbed, improves the safety of the vehicle occupant and protects a fuel tank in a reliable manner at the time of a rear end collision while allowing a spare tire to be placed within a cabin. In an automotive rear vehicle body structure having a H-type torsion beam wheel suspension system (12) pivotally supported by side sill extensions (2a, 3a) on either side of the vehicle body, the wheel suspension system including a pair of trailing arms (13, 14) and a torsion beam (15) connecting intermediate parts of the trailing arms with each other, a pair of rear side frames (6, 7) extend rearwardly from side sills (2,3), and a spare tire pan (10) is defined by downwardly bulging a part of a rear floor panel (11) located between the rear side frames (6, 7). A pair of rear center frames (21, 22) extending in a fore-and-aft direction are located behind the torsion beam (15) and attached to the lower surface of a bottom wall (10a) of the spare tire pan (10).