Dollar Rent A Car Coupons Reserve a rental car online and save! With great prices on car rentals, you'll find the rental cars you want at prices you'll love., Reserve your Dollar rental car online and save. With our lowest rates guaranteed on car rentals, you'll find the rental cars you want at prices you'll love. Our attention to customer service and our fleet of fine quality rental cars and car hire products, is complemented by our strong line-up of business travel and vacation planning services available at most Dollar Rent A Car locations. Reserve your next rental car through our convenient and secure online car rental reservation center. Planning your next family vacation or business trip was never easier with our car rental travel partner program featuring convenient online airline and hotel reservations from major companies such as Southwest, American, United, Hawaiian and more!