I bought a private party P85 about 8 weeks ago and am loving it so far.
Look up my post history if you're really interested. But, I have a service appointment tomorrow to take care of the annual service but also look into a laundry list of things I've noticed over the last 8 weeks. I think this car is amazing, but I've probably read so much over the years I was looking to buy, that I probably stumbled over many of these issues mentioned in various threads - which is probably why I found so many so quickly.
It will be interesting to see how my first warranty/service experience goes.
A lot of my issues are annoying things, but probably not (at the moment at least) causing functional problems. Squeaky/clanky brake pedal, loud/screechy fans, dash rattles, shuddery sunroof, drive unit seems noisier (although the DU would be covered under drive train warranty anyway as I understand). So what kind of owner are you? I'm the type who likes everything to be up to snuff in my cars. I hate driving around with a rear heat seater that doesn't work, even though nobody ever uses it, for example. When your car is under warranty, you can just take it in and say fix *everything*. When you're out of warranty, you're always doing the math and going, hmm, how much is that going to cost to fix? How much do I care? How much longer will I own the car? Should I just leave it? Etc
So, it's my personal view that the warranty is well worth it. I got a private party that was barely above trade in, which was a great deal. I had the previous owner add the 4yr ESA. Now I have 5.25yrs and 67k miles of bumper to bumper warranty. Couldn't be happier to know almost exactly how much this car will cost to drive over the next 5 years.
Also consider the difference between owning a car out of warranty and trying to sell a car that's out of warranty. I plan to sell this car with a little warranty left, at which point I really believe I'll recoup at least $1k of the warranty price in a higher sell price.