Because drivers under 25 are considered a higher liability, most car rental companies are reluctant to rent to younger drivers. Still, there are ways to get around the issue, as long as you're able to meet certain requirements and pay some extra money.
Make sure you meet the minimum requirements. Some car rental companies will rent a car to those under 25, but never to those under 21. You will also need your own auto liability insurance, plus a driver's license with a clean record and a credit card. All items must be in your own name, although you may be allowed to rent if you're included in your parents' liability and collision insurance policy.
Research different local companies and their policies. Most companies charge surcharges to drivers under 25. These are costs charged on top of the vehicle's normal rental rate and can be as high as an additional $30 per day.
Get a rental in a state that allows younger drivers. Alabama does not allow rentals to anybody under 25, while New York state has a minimum age requirement of only 18. While you may have a hard time finding a company that rents to drivers under 21, it's still worth asking around if you're in a state that allows it.
Choose a standard-size car, such as an economy or compact. Drivers under 25 are usually not allowed to rent sports cars, SUVs or luxury vehicles.
Join Hertz #1 Club Gold. For an annual $60 membership, you are entitled to special savings and discounts plus no surcharges for drivers over 21. In certain areas, you may need your parents to enroll and include your name in the membership roll. Savings apply to cars rented throughout the country, and may be the only way for drivers under 25 to rent a car at the airport, where restrictions are more numerous.
Stick to smaller companies if price is a consideration. Companies such as Rent-a-Wreck, which caters to college students, may be a good choice. Cars at Rent-a-Wreck are slightly older, but in good condition. Another way to find smaller operations is to look for a rental in a small town or rural area, where many local offices are independent outfits and do not have to adhere to corporate or state policies.