So I've been trying to find an answer to a question I have regarding the battery conditions of Teslas cars, but strangely it's been eluding me so far. There is a lot of data about the degradation of the battery packs as measured using the on-board system diagnostics included in the car from production. What seems to be lacking however, is to see some people reporting their findings if they measure the consumption/range of their used cars without relying solely on the built-in Tesla-designed software. I believe that even if used Teslas are able to charge their batteries up to 100% and get within 5-10% of what their original range was supposed to be, there is still the possibility that their used battery will deplete a lot faster than what is did when new (and this is not being accurately reflected in the on-board estimates). It would be very interesting to get some data from people who drive 50,000+ miles used Teslas telling how far they can get from say 80% charge -> 30%. Information from the on-board estimate (remaining range at 80% - remaining range at 30%) as well as real-world miles travelled. Anyone up for that challenge?