I have a 75D. I have had six loaners for reasons only due to the fact it was a showroom car with less then 50 miles on it of course and quite a few items needed replacing with time under warranty, mostly for appearance. The latest trunk latch-would not open even from the inside. Saw-zall time from the inside and some new trim pieces. Yep sometimes you gotta get nasty I guess. Thats 3500 extra uses in the showroom that spelled and early end to that item. Seats Driver side twice so far, seat controllers, trim pieces worn, New Matts, New Center console, New Emergency Brake Calipers per recall.
I have had Signature Red Model S P85+ as I recall (a holy grail car in my book). It was the first and it was a great looking car. Ate juice though. Was fast, but chewed on the KWs It was an appropriate loaner for all the right reasons. The pedals in that car spaced I think differently then all the other cars. Closer perhaps. 3 weeks I had that car for all the initial fixes to my car.
Model X 75D Demo 1400 miles Midnight Gray. Hated the falcon doors really not practical at all and the auto opening front doors. I used to jump just walking up to the car as the doors would open by themselves.
(2) P85Ds and (2) 85s White, Dark Blue and (2) Black. All had yacht floor which is great for ladies bags I guess. Two of them were in great shape. All of them were fast, two had insane mode. They are built like brick s...houses. Real durable I think.
Most of them have had new motors replaced perhaps and other things maybe as Tesla I am sure picks the best for Dealer cars.
I get back in my 75D every time, its smooth, quiet and certainly fast enough for the real world. Frankly, I love it. It has the secret sauce that makes me smile at every light. It keeps me on my toes thinking and figuring on trips. DO I have to be careful at times, you bet, it keeps me on my toes. It keeps me busy. Would I like the extra juice from 100D. Yes, but for what I paid I got a great car so far(the heart is strong) and some real great loaners. Who can say they used a Sig for 3 weeks.