Not everyone knows exactly how to go about bargaining with a car salesperson — after all, they do this for a living, and chances are, you don't. Gachman says that to throw the seller off their game, you should "never, ever act impressed with anything they show you. Apathy is key here."
She also recommends asking for some extras with the car. "You should ask them to cover the cost of any registration and DMV fees, and try to get them to throw in the first month's payment as well (as long as you're putting money down). If they balk, in a very firm tone reply, 'Well, I don't want to have to walk out of here, but ...' " she writes. "They definitely don't want you to walk off; they want you to drive off — in the car they've just sold you."