Mermaid,
When car shopping, do your research for prices online. Two great sights are Edmunds.com and KBB.com. Both
have customer reviews which should be read after narrowing your field of choices. Look for the negative reviews and search for common things in the negative columns. (remember that sometimes bad or good reviews may be written by people paid to represent a car manufacturor.) Chances are though, if enough people are saying the same thing, take a serious look at that when you go for a test drive.
Next, go for some test drives. Tell whomever is showing you the cars that you probably won't buy for several months, but that you are just checking out some vehicles.
When you finally find the car which is right for you, and you know the real price which you should pay, call up the dealership and ask to speak to their internet sales manager. This person is usually working on commission for quantity of sales, not the actual price of the sales. The internet sales manager is more like an internet business as opposed to the bricks and mortar business. He never goes out to the parking lot for test drives, etc. Instead, he looks for cars for people online thru inventories at other dealerships. He has very little overhead on the products which he moves, because in reality, he doesn't need the bricks and mortar. He could just as easily work from his house if the boss allowed him to. So, when you talk to this guy, tell him that you know which vehicle you want and that you want to buy the car today (very important), and tell him that you have been shopping for cars online. Also tell him that you want his best price up front so that you can quickly make your decision. He will know that his price needs to be great to sell you the car, or that you will call someone else who will sell you that car today.
Think about it. That internet sales mgr spends 10 minutes with you and makes a sale. He is loving life. He may sell 5 a day, where the floor sales rep may sell 1 or 2 per week. The internet sales mgr will be your best shot at eliminating all of the back and forth chatter of price bids and offers and he will get you the best price, often with the first shot.
Good luck!