NADA Car Values are now J.D. Power Values. Research new and used cars, trade-in values, ratings, specs, and photos. Learn more. Learn more about a vehicle you own or plan to buy to help avoid any ...

They differ because with a car, as time goes on, the value of your car has a downward trend. If you were to appraise it, the amount you could sell it for would be less than the purchase price due ...