We recently bought used, with almost 60000 km on our CPO 2013 Tesla Model S 85.
Drove it 2500 km in first week, 6000 in the first two months.
This is our second EV, the other car (a Smart ED) in our driveway has 12000 km in two years of daily commuting.
Both are brilliant to drive, have no issues and little to no battery degradation.
My Smart ED hasn't even been back to the dealer since purchase, not for any reason.