A hybrid vehicle comprising: an engine; a first motor; a second motor; a planetary gear train (30, 35) including at least one planetary gear, rotating elements of the planetary gear train (30, 35) being connected to the engine, the first motor, the second motor and a drive shaft coupled to an axle; a rotation restriction mechanism configured to restrict rotation of the engine; a battery configured to exchange electric power with the first motor and the second motor; and an electronic control unit (24, 40, 70) configured to i) in double-drive mode in which the hybrid vehicle travels by using torque from the first motor and the second motor in a state where the rotation of the engine is restricted, control the first motor and the second motor such that a required torque that is required for the drive shaft is output from the first motor and the second motor to the drive shaft, and ii) in the double-drive mode, when a deviation between a first rotation speed of the drive shaft and a second rotation speed of the drive shaft is larger than a threshold, determine that there is a malfunction in any one of the planetary gear train (30, 35) and the rotation restriction mechanism, the first rotation speed being calculated from a rotation speed of the first motor at the time when the rotation of the engine is restricted, and the second rotation speed being calculated from a rotation speed of the second motor. an engine; a first motor; a second motor; a planetary gear train (30, 35) including at least one planetary gear, rotating elements of the planetary gear train (30, 35) being connected to the engine, the first motor, the second motor and a drive shaft coupled to an axle; a rotation restriction mechanism configured to restrict rotation of the engine; a battery configured to exchange electric power with the first motor and the second motor; and an electronic control unit (24, 40, 70) configured to i) in double-drive mode in which the hybrid vehicle travels by using torque from the first motor and the second motor in a state where the rotation of the engine is restricted, control the first motor and the second motor such that a required torque that is required for the drive shaft is output from the first motor and the second motor to the drive shaft, and ii) in the double-drive mode, when a deviation between a first rotation speed of the drive shaft and a second rotation speed of the drive shaft is larger than a threshold, determine that there is a malfunction in any one of the planetary gear train (30, 35) and the rotation restriction mechanism, the first rotation speed being calculated from a rotation speed of the first motor at the time when the rotation of the engine is restricted, and the second rotation speed being calculated from a rotation speed of the second motor. i) in double-drive mode in which the hybrid vehicle travels by using torque from the first motor and the second motor in a state where the rotation of the engine is restricted, control the first motor and the second motor such that a required torque that is required for the drive shaft is output from the first motor and the second motor to the drive shaft, and ii) in the double-drive mode, when a deviation between a first rotation speed of the drive shaft and a second rotation speed of the drive shaft is larger than a threshold, determine that there is a malfunction in any one of the planetary gear train (30, 35) and the rotation restriction mechanism, the first rotation speed being calculated from a rotation speed of the first motor at the time when the rotation of the engine is restricted, and the second rotation speed being calculated from a rotation speed of the second motor.