Nothing.
My wife and I purchased our 2007 Taurus a month ago, and are very happy with the purchase. It's a great looking car for a great price.
Ours has almost every option, SEL, moon roof, leather, ABS, trip computer, 6 cd changer, home link, climate control, spoiler, auto lights, and key pad entry.
We looked at a Fusion, a great car, but bought this one with 17,000 miles on it for about 10k less. It drives great, smooth and quiet.
I am sad that Ford discontinued the Taurus as they are a nice size car, not too big, or too small. I am miffed at why so many people dis this car. I guess it's mainly import owners who would not buy an American car.
I would highly recommend the 2007 fleet Taurus to anyone looking for a quality car at a great price.
They did come back with the taurus for 2008. Its even nicer than the previous ones. Make sure to check it out.
No doubt, the 2008 Taurus is a great looking car! Nice lines, really nice interior, looks and feels like a full-sized sedan (which I miss after a couple of decades of "econo cars") and yet it has more horsepower and gets better mileage than its predecessors. If I needed a car, I would buy one right now!