[Giller]

Originally Posted by thstone

I would state this differently;

Yes, all engines ultimately fail.

Yes, high mileage engines will see groupings of typical failure modes.

Yes, all engines (even low mileage) can fail for one reason or another on occasion.

But no, is NOT normal or typical for a well maintained, low mileage engine (<75K miles) from any well known modern car manufacturer to have a critical engine component fail at a rate of 1%-2% which results in the destruction of the entire engine. This definitely does NOT happen to Honda's or Toyota's (won't go out on a limb for Ford's )

If the IMSB failure rate was in any way related to safety, there would have been a mandatory recall. But since the issue is reliability related, owners had to sue Porsche. And won. That alone is a pretty special circumstance and not at all normal or typical for most car manufacturer's.

Now, with that being said, like Giller, I am quite comfortable with a 98% change of success.

Yes. Well thought out and makes sense. My only argument would be that there are few cars that maintain such low mileage as our Boxsters as many of them are garage queens. This alone is pointed to as a big reason IMS can fail. I wonder if you let other engines sit idle with little drive time if they too would have issues and problems? It seems to me that the folks on here who drive their cars the most, have the least problems? This makes it very difficult to compare apples to apples.
But I don't disagree with your overall sentiment.