tilac999

40K miles is not high miles. Porsche will certify cars as CPO with up to 124K miles. That says something. It's a very drivable sports car not an Italian classic...

HardRider

As far as "sports cars" go the 911 is reliable, compared to a Camry or Lexus not close. My 200K mile 20 year old Lexus seat doesn't have slop in it. Gets adjusted 4 times a day which equates to 1200 times a year. On the other side my 20K mile 911 has a little slop when starting and stopping. Porsche CPO is determining if normal wear and tear, lol! There are some other early "wear" items but high mileage will have more wear than low mileage and there are many components to a car then just the engine and transmission.......

IXLR8

^ even though I looked at and drove a Porsche Macan and BMW X3, I chose an Acura RDX because I tend to keep my cars for a long time, longest so far is 14 years and that car is now in the hands of a Porsche 997 owner at 23 years and that engine and transmission has never been opened, not the usual 3 year trade-ins. That car has over 200,000 miles on it. Of course I looked after it and it never saw a dealer or shop.

Atheist

I also have a Cayenne. It's a 2011 S I purchases back in 2014 with 48K on it. I purchased an aftermarket warranty that covered the car to 125K miles. As you said I love that truck so much it now has 173K miles, runs perfect and I use it in bad weather, and for surfing beach days, Home Depot runs and when I need to transport passengers and cargo. Actually my 991.2 gts, while it is the car I always wanted and I love it too, has made me appreciate my Cayenne even more. If I could only have one car, it would be a Porsche Cayenne V-8. It is the ultimate performance / utility / bad weather / moderate off road / trailer towing / luxurious / cargo / combination vehicle that can do it all. Of course once you have a Cayenne which is a car your really need, car number two has to be a 911 because that is the car you really want.

I also have had two MBZs and still have one my wife drives. Plus I had a couple of very nice BMW's over the years including a '97 840CI and a Dinan tuned 740i M-sport but frankly the build quality and reliability of the Porsches are miles ahead of the others. Moving forward, as long as I can afford it, I'll stay with Porsche. The Mercedes are very well built and quite reliable, the Bimmers were notorious for lousy, radiators / expansion tanks and window regulators. I kept my 740 for almost 20 years and 300K miles but must have replaced the radiator and expansion tanks every 50 K and the every window regulator multiple times. Good performance but certainly more quality issues.