The invention relates to a vehicle body structure, with at least one hollow profile beam (1) that extends in the direction (x) of the lengthwise extension and with a hollow profile (7) whose height (Δz1; Δz2) between two opposite profile walls (17) varies along the direction (x) of the lengthwise extension, and in this hollow profile (7) at least one dividing element (23) is arranged in order to reinforce the hollow profile beam (1) in a crosswise direction (y). According to the invention, the dividing element (23) consists of two separate sheet metal parts (33, 35) which are each firmly attached to the opposite profile walls (17) and which are firmly joined together at a shared connection point (A).