Abstract: A display device includes an acquisition unit that acquires an estimated cruising range obtained using remaining charge of a battery that supplies electric power to a traction motor of a vehicle, a first display portion that displays a gauge that, with regard to an electric mileage difference between a specific electric mileage that is an electric mileage at a particular timing during traveling of the vehicle and a reference electric mileage, changes in accordance with change in a cumulative value in which the electric mileage difference at one or more of the particular timing is accumulated, a second display portion that displays the estimated cruising range of the vehicle, and a display control unit that changes the gauge of the first display portion, and when the cumulative value is no less than a predetermined value, displays, in the second display portion, information indicating increasing the estimated cruising range.