A driving force control system is for use in a vehicle including a centrifugal clutch. The centrifugal clutch includes an upstream member mechanically connected to an engine to rotate, and a downstream member to be mechanically connected with or disengaged from the upstream member based on a centrifugal force occurring in accordance with rotation of the upstream member. The centrifugal clutch automatically turns ON or OFF transmission of motive power between an upstream-of-centrifugal-clutch path from the engine to the upstream member and a downstream-of-centrifugal-clutch path from the downstream member to a driving wheel, with a centrifugal force which is in accordance with rotation of the upstream member. The present system exerts control so that, in a state in which the driving wheel is slipping, a reduction rate in rotation speed under non-connection concerning the upstream-of-centrifugal-clutch path is smaller than a reduction rate in rotation speed under connection concerning the upstream-of-centrifugal-clutch path, thereby adjusting slipping of the driving wheel.
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