A front body structure forms an engine compartment in front of which a flat heat exchanger, provided with a pair of cooling fan units projecting lengthwise and rearward therefrom and transversely arranged with a space therebetween, is positioned. The front body structure includes a front body frame structure, defining opposite side walls of the engine compartment, and a front end frame structure, defining a front end wall of the engine compartment, which includes an upper front cross member extending transversely between the side walls so as to form an upper front end of the engine compartment. Stay members extend downward from the upper front cross member and are arranged so that a space between adjacent stay members is formed for receiving a cooling fan unit. A lower front cross member, extending transversely of the car body between the opposite side walls, forms a lower front end of the engine compartment.