The battery packs and motors on the S & X have an 8 year, unlimited mileage, warranty. So even the earliest Model S production cars from 2012 have another 2 years left on their battery/motor warranties.
What could be expiring is the 8 year/100K mile extended warranty - which we were close to losing on our 2012 S P85 when we decided to trade it in a few months ago for a new X 100D. There are a small number of high mileage Mode S/X vehicles that have passed the 100K mile extended warranty threshold; they could report their experience in high mileage maintenance past the warranty.
What could be expiring is the 8 year/100K mile extended warranty - which we were close to losing on our 2012 S P85 when we decided to trade it in a few months ago for a new X 100D. There are a small number of high mileage Mode S/X vehicles that have passed the 100K mile extended warranty threshold; they could report their experience in high mileage maintenance past the warranty.