Provided is a motor control apparatus that can easily distinguish between a current sensor abnormality and a rotation-angle sensor abnormality, without making a current sensor a duplex system. An MGECU estimates a W-phase current on the basis of a V-phase current detected by a current sensor, and estimates the V-phase current on the basis of a detected W-phase current. An actual torque of a motor generator is estimated on the basis of the detected V-phase current and the estimated W-phase current, and the actual torque of the motor generator is also estimated on the basis of the detected W-phase current and the estimated V-phase current. Then, an evaluation is made whether an abnormality is an abnormality of the current sensor or an abnormality of a resolver, on the basis of the differences between the torque command value for the motor generator and both the estimated actual torques.