The Skyscanner app has your best interests at heart and is a great cheap car rental app. It breaks every car rental down for you, telling you its fuel policy, insurance info, and more to make sure you're getting the right car for you.

Plus, Skyscanner is another travel app that lets you select a car rental, hotel, and flight all from one place. And its transparency translates to the hotel room and flight picks for you too. You can even see reviews on rental cars from other users to see how that particular rental car company has fared in the past with its customers.