A vehicle body includes left and right front side frames extending in a vehicle front-to-rear direction. A power unit is disposed between the front side frames. Each of the left and right front side frames includes an inner frame disposed at a vehicle widthwise center side and an outer frame superposed on a vehicle outer side of the inner frame, and has a closed quadrangular sectional shape that is formed by the inner frame and the outer frame. A front portion of the outer frame has a triangular portion that has a substantially triangular shape whose width decreases from front to rear. Each front side frame has a power unit mount-fastening portion at a location rearward of the triangular portion.