A drive force control system that ensures a running stability and a driving performance of a vehicle even in the event of failure of one of motors. The drive force control system determines that one of the right motor and the left motor cannot generate a required torque due to failure. In the event of failure of any one of the motors, the drive force control system generates a torque by the other motor working properly, and controls the torque transmitting capacity of the clutch in such a manner as to deliver the output torque of the motor working properly to the wheel coupled to the faulty motor.