What is the phone number for dollar car rental? 800-800-3665 is the customer service phone number of the Dollar Rent A Car.Does dollar rent a car ok? Dollar is fine. I rent from them often when their rates are significantly better than Hertz's, which is my preferred car rental.Do rental car companies service their cars? Car rental companies must maintain their cars very well to stay in business, and they are willing to sell their used cars for less than most dealers or private owners. This means that a car you buy from a rental company is likely to be both cheaper and in better condition than one you get from a private owner.Who owns dollar rental company? Religious Liberty. Thrifty Car Rental is a car rental company owned by Dollar Thrifty Automotive Group, a subsidiary of Hertz Global Holdings. The Dollar Thrifty Automotive Group also owns the brand Dollar Rent A Car.