An electronic control unit performs a control process including a step of setting a second learning time shorter than a first learning time when a Charge Sustaining mode is not selected, a step of setting enlarged values as upper and lower limit values of a feedback value, a step of switching an engine stop prohibition flag to an ON state when a learning start condition is satisfied, a step of performing learning control, a step of performing an update process when the set learning time elapses, and a step of turning off the engine stop prohibition flag.