A vehicle body structure includes a floor assembly, a B-pillar assembly, a seatbelt tensioning mechanism, a seatbelt pre-tensioning device and a support bracket. The B-pillar assembly is attached to the floor assembly and extends upwardly from the floor assembly. The seatbelt tensioning mechanism is supported to the floor assembly adjacent to an intersection between the floor assembly and the B-pillar. The seatbelt pre-tensioning device is positioned adjacent to the seatbelt tensioning device. The support bracket is fixed to the B-pillar and the seatbelt pre-tensioning device.