A rear suspension system comprises an A-shaped control arm supporting a rear wheel at a first point and a lateral rod supporting the rear wheel at a second point and supported on a vehicle body at a third point. The control arm is supported on a vehicle body in such a way as to be capable of pivoting about an axis and movable a little along the axis of pivoting. The control arm and lateral rod are constructed and arranged so that the second point is located more laterally outward of the vehicle body than the first point and that the second point is located more forward of the vehicle body than the third point.