Detection-time torque of a drive source is determined when a value that varies in accordance with depression of an accelerator pedal has exceeded a predetermined value, first torque is determined on the vehicle speed and the transmission gear ratio, second torque is determined on the detection-time torque and the first torque, third torque is determined on the amount of depression of the accelerator pedal and the second torque, and fourth torque is determined on the depression of the accelerator pedal, and the output torque is limited to the third torque as long as the third torque is less than the fourth torque. The third torque is determined such that in the case where the detection-time torque is greater than the first torque, an increase of the third torque is suppressed further than where the detection-time torque is not greater than the first torque.