A few months ago purchased a 2003 9-5 aero with only 37,000 miles for about $11,000. I just reached the 40,000 mile mark and figured I would take the car to the dealer for only this interval, just to ensure everything was in line. Not to my surprise they found something wrong, they said that my serpentine belt was near breaking and had to be replaced ...this cost me 500 dollars:evil:. How much did they kill me. Im sure this has needed replacement on other cars, how much did it cost you?