You can just ask the owner to purchase the extended factory warranty before they transfer title (as long as they are the original owner), yes? There are many Teslas for sale by the original owner because the car is so new.
As one example OP, I have a current offer on a 2014 P85D with 21" rims loaded with everything except pano roof and premium interior, 12K miles, for $89,900. I am 90% certain that if I agreed to $88K the owner would sell. Comparable CPO P85D's listed on ev-cpo right now are $10K-$15K higher. And this P85D private party is indeed the first owner - so I could add $4K to the price and I now have 90K more miles of warranty and an additional 4 years of coverage on top of the remaining 3 years of factory warranty.
This was just discussed on another thread but the ESA transfer process is more convoluted than it has to be. Most disconcerting is that it is contingent on an "inspection" of the car by Tesla and proof that the car was maintained as stipulated by the original owner and the transfer can only be confirmed AFTER you buy the car. So if for whatever reason you buy the car and Tesla denies the ESA transfer for whatever reason you are stuck with a car with no ESA.
They must have a process to confirm that the ESA is in fact in effect and can and will be transferred to the new buyer BEFORE the transaction is made. With any other car with a manufacturer Extended Warranty, it is a piece of cake to obtain a statement of warranty coverage and you literally sign one form to transfer the warranty to the new owner and you are done.
J. Transfer of this Vehicle ESA
Contact Tesla and submit the following:
1. A letter requesting that Tesla transfer this Vehicle ESA to the new owner.
2. $100 transfer fee.
3. This Vehicle ESA.
4. Written evidence verifying all maintenance requirements have been met.
5. A copy of documentation evidencing change of ownership and mileage at date of sale.
6. Documents verifying transference of the Vehicle ESA, if applicable.
Conditions:
1. This Vehicle ESA cannot be transferred to another vehicle. It can only be transferred to a different private owner of the same Vehicle.
2. The Vehicle is subject to inspection.
3. Transfer must take place within 30 days of change of ownership.
4. You may not transfer this Vehicle ESA to a vehicle dealer or to the customer of a vehicle dealer.
5. All remaining underlying warranties also must be transferred to the new owner.