A vehicle comprising: an internal combustion engine; a first motor; a second motor; a driven wheel; a planetary gear mechanism including a sun gear coupled to said first motor, a ring gear coupled to said second motor and coupled to said driven wheel via a reduction gear, a pinion gear engaged with said sun gear and said ring gear, and a carrier coupled to said internal combustion engine and rotatably supporting said pinion gear; and a control device that controls said first motor, wherein said control device determines whether or not a combustion state of said internal combustion engine is good based on whether or not a rotation speed or torque of said internal combustion engine falls below a predetermined value, when said internal combustion engine is in an idling state and when a combustion state of said internal combustion engine is good, said control device causes said first motor to produce torque in a direction in which said internal combustion engine is prevented from operating, and when said internal combustion engine is in an idling state and when said combustion state is not good, said control device makes the torque in the direction in which said internal combustion engine is prevented from operating produced by said first motor smaller than when said combustion state is good, characterized in that when said internal combustion engine is in the idling state and when said combustion state is not good, said control device does not cause said first motor to produce the torque in the direction in which said internal combustion engine is prevented from operating, wherein said control device determines whether or not said combustion state is good while said internal combustion engine is operating, and stores a determination result, and when said internal combustion engine is in the idling state while said vehicle is stopping, said control device causes said first motor to produce the torque in the direction in which said internal combustion engine is prevented from operation if there is no history including a determination that said combustion state is not good, and does not cause said first motor to produce the torque in the direction in which said internal combustion engine is prevented from operating if there is a history including the determination that said combustion state is not good. an internal combustion engine; a first motor; a second motor; a driven wheel; a planetary gear mechanism including a sun gear coupled to said first motor, a ring gear coupled to said second motor and coupled to said driven wheel via a reduction gear, a pinion gear engaged with said sun gear and said ring gear, and a carrier coupled to said internal combustion engine and rotatably supporting said pinion gear; and a control device that controls said first motor, wherein said control device determines whether or not a combustion state of said internal combustion engine is good based on whether or not a rotation speed or torque of said internal combustion engine falls below a predetermined value, when said internal combustion engine is in an idling state and when a combustion state of said internal combustion engine is good, said control device causes said first motor to produce torque in a direction in which said internal combustion engine is prevented from operating, and when said internal combustion engine is in an idling state and when said combustion state is not good, said control device makes the torque in the direction in which said internal combustion engine is prevented from operating produced by said first motor smaller than when said combustion state is good, characterized in that when said internal combustion engine is in the idling state and when said combustion state is not good, said control device does not cause said first motor to produce the torque in the direction in which said internal combustion engine is prevented from operating, wherein said control device determines whether or not said combustion state is good while said internal combustion engine is operating, and stores a determination result, and when said internal combustion engine is in the idling state while said vehicle is stopping, said control device causes said first motor to produce the torque in the direction in which said internal combustion engine is prevented from operation if there is no history including a determination that said combustion state is not good, and does not cause said first motor to produce the torque in the direction in which said internal combustion engine is prevented from operating if there is a history including the determination that said combustion state is not good.