This is untrue, dealerships have reputations to uphold and they will at least put some type of service into the car. Buying privately is a double edged sword. If you have the cash,yes you can save a lot of money compared to the dealership but A. You have no warranty in most cases. B. You don't know how the previous owner treated the car and while you can check some things with your eyes, unless you are willing to pay a mechanic to inspect the car, you don't really know what's wrong with it. My nephew purchased a car private sale and ended dumping 2500 of work into the car.