My car is getting it's trans replaced right now, on Ford's dime. I got my Contour in '98 with 23,000 miles on the odo. and I added the 10 yr/100k mile ESP at that time. With 88,000 miles on the car I still have some miles left on the warranty. With a water pump and an ATX taken care of, I've more than broke even. The ESP is worth it if you plan on keeping the car for a while.