Graph means what?
So out of 100 Porsches on any particular day of the year, on average that sampling showed that there were 97 "problems" evident in those 100?
Or over the life of those 100 cars they cumulatively had 97 problems at some point in time?
As the 2nd owner of a 99 Jeep Wrangler, having owned it for the last 10 years, I have only replaced a cracked header, and a starter motor after numerous submersion's in the lake while launching Seadoo's.
No current issues, so how does that translate to those statistics?
Lies, damned lies and statistics, its all the same.
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"It broke because it wants to be Upgraded

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2012 Porsche Performance Driving School - SanDiego region
2001 Boxster S, Top Speed muffler, (Fred's) Mini Morimotto Projectors, Tarret UDP,
Short Shifter, Touch Screen Dual Din Radio, 03 4 Bow glass Top (DD & Auto-X since May 17,2012)