Abstract: In a vehicle body structure wherein a reinforcement panel is fixedly arranged at an angle to reinforce an upright fire-wall panel in the form of a rear wall of an engine room for mounting a power transmission unit together with an internal combustion engine in the engine room and wherein each of the panels is provided with a through hole through which at least a push-pull cable of the power transmission unit extends into the vehicle compartment to be connected to a manual shift lever, a support structure for the push-pull cable comprises a pair of cover members of elastic material fixedly coupled over the through hole of each of the panels for resiliently supporting and clamping the push-pull cable thereon and for closing the interior space between the panels.