23 things car dealerships dont want you to know conduct research ahead of time nearly 90 percent of car buyers use the internet to research autos before making a pay with cash it might be tough to fork over a big chunk of change but paying cash for a new or used car will also keep leverage . All you want is the best car for your money all the dealer wants is to get the most money he can that may mean trying to convince you to buy things that you really dont need here are 5 things car dealers dont want you to know when buying a new car or truck 1 the sticker price isnt really the price. Know what car you want you dont need to know exactly what car you want before you do anything else but it helps to have a few ideas of what to look for before you start the process