A control method for a hybrid vehicle that supplies electric power of an externally rechargeable battery and electric power generated by an electric generator to a drive device, the control method comprising: estimating a running load of the drive device on a basis of a driver's requirement, wherein the running load is acquired from a vehicle speed or a running power output that the driver requires, and the vehicle speed or the running power output is an average vehicle speed or an average running power output from a present location until arrival at a destination; and estimating a required running distance on a basis of the driver's requirement; calculating a first distance to empty that the hybrid vehicle is able to run in a state where the estimated running load is fulfilled on a basis of an amount of charge remaining in the battery and an amount of fuel remaining used to drive the electric generator; calculating a second distance to empty that the hybrid vehicle is able to run in a state where the estimated running load is fulfilled in a case where a charging operation on the battery is performed; calculating a third distance to empty that the hybrid vehicle is able to run in a state where the estimated running load is fulfilled in a case where a refueling operation on the electric generator is performed; calculating a fourth distance to empty that the hybrid vehicle is able to run in a state where the estimated running load is fulfilled in a case where both the charging operation on the battery and the refueling operation on the electric generator are performed; and notifying the driver of, as a necessary energy replenishment operation, either one or both of the charging operation on the battery and the refueling operation on the electric generator on a basis of the first distance to empty and the required running distance; wherein the notifying of the necessary energy replenishment operation includes: comparing each of the first to fourth distances to empty with the required running distance, thereby notifying of information that allows the driver to select a necessary energy replenishment operation. estimating a running load of the drive device on a basis of a driver's requirement, wherein the running load is acquired from a vehicle speed or a running power output that the driver requires, and the vehicle speed or the running power output is an average vehicle speed or an average running power output from a present location until arrival at a destination; and estimating a required running distance on a basis of the driver's requirement; calculating a first distance to empty that the hybrid vehicle is able to run in a state where the estimated running load is fulfilled on a basis of an amount of charge remaining in the battery and an amount of fuel remaining used to drive the electric generator; calculating a second distance to empty that the hybrid vehicle is able to run in a state where the estimated running load is fulfilled in a case where a charging operation on the battery is performed; calculating a third distance to empty that the hybrid vehicle is able to run in a state where the estimated running load is fulfilled in a case where a refueling operation on the electric generator is performed; calculating a fourth distance to empty that the hybrid vehicle is able to run in a state where the estimated running load is fulfilled in a case where both the charging operation on the battery and the refueling operation on the electric generator are performed; and notifying the driver of, as a necessary energy replenishment operation, either one or both of the charging operation on the battery and the refueling operation on the electric generator on a basis of the first distance to empty and the required running distance; wherein the notifying of the necessary energy replenishment operation includes: comparing each of the first to fourth distances to empty with the required running distance, thereby notifying of information that allows the driver to select a necessary energy replenishment operation.