IUC-PG Contract Reservation Link Enterprise Rent-A-Car Reservations: 1-800-261-7331 National Car Rental Reservations: 1-877-222-9058 HOW TO PAY FOR THE RENTAL VEHICLE All renters reserving vehicles must have a credit card in their own name in order to rent vehicles. National Car Rental Promo Codes. National Car Rental is proud of its rich heritage. It was established in the first half of the 20th century by independent car rental agents. Today it operates in more than two thousand locations worldwide. It is without a doubt one of the best-known car rental companies in North America. Get to know the Benefits and Rewards National Car Rental is part of the Enterprise Holdings company, which also includes car rental giants Enterprise Rent-A-Car and Alamo. That means it knows what it's doing, and you can feel comfortable knowing that the company's building on plenty of expertise to give you the best experience at National Car Rental.