When car shopping, the experience you have at your local car dealership is just as important as getting a fair price for a new car. J.D. Power rates car dealerships on the level of sales experience you receive when purchasing your new car and how you and your vehicle were treated during the maintenance and repair service at the dealership. Ratings, reviews and awards are based on how verified owners and lessees of 1-5 year-old cars were treated at franchised dealers.