How common is IMS failure REALLY?

[mikefocke]

that 5% of the Boxster engines suffer IMS failure.

(I think that is probably high and that no one knows but PNA and they aren't talking...but I gotta use some figure)

Lets say a new from Porsche engine costs $13k delivered and installed with a core exchange.

Lets also say a warranty from a fairly reputable (but not perfect) company costs $3000 per year (about what I was quoted) for an older 986. Keep in mind the warranty could pay for other things besides an IMS failure.

I have a $650 (5% of $13k) "risk" of IMS cost. Of course if I lose, I lose big to the tune of $13k but then I have a 2 year engine warranty.

Should I buy the warranty? Or bet I'll be in the 95%

That is the question.

And to a certain extent, that is the question with any used car, though not to the extent of a P-car because Porsche charges so much for "new" engines and there is no real source for rebuilt ones that lowers the cost of replacement to the $2-3K range (or did when my Chrysler/Mitsubishi engine blew).