I have an '08 GTS with 119K miles on it. I bought it with 84K miles, 3.5 years ago. Hasn't been too bad to own. I don't even really drive it....the girlfriend uses it when the weather isn't good enough for her Boxster.
Cardan Shaft bushing went bad at 104K miles (first time on this thing...that seems to have lasted longer than most)….I did the "Jimmy Fix" on it, and it surprisingly has worked just fine.
I replaced the thermostat, which involves removing the intake manifold, replacing every gasket, etc. Not an expensive job.....just a messy, pain of a job.
My most expensive fix: One of my Xenon headlight control units went bad, due to water intrusion. I replaced the pair, since mine were specific with the adaptive headlights. You have to take it to a dealer for reprogramming. Suncoast Porsche had the cheapest prices on the control units. I still believe it was about a grand for the two units, plus an hour of labor for the local Porsche dealer to reprogram them. I kept the "good" used unit as a back up.
