In a vehicle provided with an ARS actuator and an ARS driving apparatus as the rear-wheel steering apparatus, an ECU performs ARS electric power saving control. In the control, electric power supply to the ARS actuator is cut under the conditions that a rudder angle deviation Δδr is greater than a reference deviation Δδth and that a duration Tlst exceeds a reference value Tlstth in cases where a rear-wheel rudder angle δr is greater than a reference rudder angle δrth, wherein the rudder angle deviation Δδr is a difference value between a target rear-wheel rudder angle δrtg and the rear-wheel rudder angle δr and the duration Tlst is a time in which the state that the rudder angle deviation Δδr is greater than the reference deviation Δδrth continues.