To get the best deal, plan your moves and take your time. Arm yourself with as much information as possible about the car you want, and how much it should cost. Know what you want, but be flexible. Narrow your list to two or three models that best suit your needs and pocketbook, yet don't be rigid. You won't get the best price if you insist on a particular color or specific equipment, such as a blue coupe with a CD player and a sunroof.
Shop competing dealers to compare prices on the same car with the same equipment.
That can be a tall order, as extra-cost options get more complex. Get written price quotes that are good next week, not just today. Get a written statement that you will get your deposit back if you change your mind. Manufacturers frequently group options in packages. This often reduces the cost of all the included items, but to get the feature you want, you may have to purchase some options you don't.