Heat exchanger mounting structure for vehicle

A cross member (2) laterally extends in the front space of an engine room. Supporting portions are provided on a vehicle body for supporting opposite ends of the cross member, respectively. The supporting portions deform when an external force caused by a vehicle collision is applied to the cross member such that the upper part of the heat exchanger (1) moves rearward and downward upon deformation. Elastic members (6) are provided between the supporting portions and the opposite ends of the cross member, respectively. Connecting members (5) connect the upper part of the heat exchanger to the cross member.