A total distance calculating unit calculates a total running distance and an energy-cut-off distance calculating unit calculates a deceleration running distance of a vehicle. The deceleration running distance is a distance for which the vehicle runs while the vehicle is in a deacceleration state and no energy is supplied to a motor of the vehicle. A deceleration-running evaluating unit evaluates deceleration running of the vehicle based on a ratio of the deceleration running distance to the total running distance. The result of the evaluation is displayed for the driver of the vehicle.