Abstract: A rent-a-car management apparatus includes a storage unit for storing rent-a-car identification information and return due-time-and-date information in association with each other. Information concerning a current position of a car which matches the rent-a-car identification number of a rent-a-car record read from the storage unit is obtained. Based on the information concerning the current position and information concerning a predetermined rent-a-car return place, a return traveling time required for the car to move to the predetermined rent-a-car return place is calculated. If the return traveling time is greater than or equal to the remaining time before the car is to be returned, return time limit information, route information, or extension-time input information for allowing the user to extend a rental period is sent to the rent-a-car terminal to inform the user at a suitable time that the return due time is approaching.