Yeah, most people don't use them as daily drivers so they haven't hit 100K yet. My 18 year old 928 just hit 105K because the POs never drove it. When we bought our Boxster, the PO had put 21K miles on it in 3 1/2 years. We've had it two years and it now has 65K miles on it so I guess we're the exception to the rule. We should hit 100K in the next two years, but it should last much longer than that.
I would expect to get 300-400K miles if you take proper care of your baby and you stay away from the '99s that were manufactured during the engine plant problem. One of the guys who services and sells parts for the 928 said on average the engine's last well over 300K miles before requiring a re-build
if they are maintained properly.
Here's the "problem" with Porsches:
Unfortunately, most of Porsche's initial owners (and other exotic car owners) are not "car people" who are truly interested in every aspect of a Porsche as a finely tuned performance machine. Most just have the money and want a cool car. They take pretty good care of it during the warranty, but usually sell it within 2-3 years. While under warranty, the bad thing that can happen is the owner doesn't hit the "oil change mileage" so they don't change it. Oil that isn't regularly filtered by the engine running forms acid and has a lot of condensation so it wears an engine down when they do drive it.
Often, the next owner gets the car because the depreciation hit has already occured and he could get into a Porsche for the price of a Toyota. Then you can have other problems occur. The new owner has no idea about the maintenance costs. he goes in for the 15K or 30K service and gets a bill for $800+. After that, he only gets the oil changed at a mechanic's shop for $80 and prays nothing really bad goes wrong.
After you drive a Boxster, you will buy one. Just get a
complete PPI done by a dealer and if you can, get an
oil analysis done too. The oil analysis will tell you a lot about how the engine has worn and if there are any internal leaks between fluids.
