http://www.truecar.com

I used this method last time I bought a car, a couple years ago. It takes all of five minutes to send the same email to several dealers, then take the lowest price you get and email the rest of them again asking if they can beat it. After a couple rounds, I ended up buying from the first dealer that had responded, with an offer ~10% below invoice. Why do all the work of negotiating or spend the money on a car-buying service when you can make the dealers compete directly with each other for your business?

Man oh man, my mom should do this. She is a *tough* negotiator and thoroughly enjoys it. She breaks car salesmen like you or I might open a pistachio. I'm in your boat: I don't like the hassle/experience.