If you are not a good negotiator, but your friend or relative is, bring them with you. Let them do the dirty work of getting you a good price on the car and then you take care of signing all the paperwork. There are companies you can hire that offer this service as well. One of their expert negotiators will work out the best deal for you and you pay them a fee. You should do your homework though so you know what a good deal on that particular vehicle would be. Not everyone is a natural negotiator!