To rent an SUV in Buffalo, you must be at least 21 years old. However, most car rental agencies will charge you an extra fee every day if you are 24 years old or younger. When you are making your rental reservation, ask if this fee will indeed be assessed in how much it will be so that you are not hit with any unexpected costs. At the time that you collect your vehicle, you will need to have your valid driver's license and your own credit card to put a safety deposit down on the vehicle. Search rental cars on KAYAK