Interesting thoughts all. I'll add my observations from the Leaf perspective. The greatest killer of used value (aka depreciation), is the ability to purchase a better new product for less money. That has been the primary driver for EVs, especially the lower priced ones like the Leaf. Why buy a used Leaf (especially 1st gen 2011 or 2012) unless it is much less than the current new price minus tax credits and incentives? Throw in battery degradation, wear and tear, uncertainty, etc. and you certainly won't want to pay much for the used item. I don't remember the exact prices, but Nissan lowered the MSRP and introduced an additional lower priced model. Subtract off the incentives for new (pick your state): $7500 US, $5000 (GA) or $2500 (CA) or sales tax exemption (WA) and your down more than $10,000 from the $29-35K MSRP. So $20-25K new vs $10-15K used (about 50%). Sounds like a market to me. What would you pay for a 4 yo laptop or cell phone? Again, probably less than 50% new. This is the problem with all technology. As products improve, it pushes the value of the used products down, often to the next level of purchaser. A similar situation is happening with the Tesla. Tesla introduced the "D" and a large number of "P" and "P+" were dumped on the market as price insensitive people upgraded, rapidly (and maybe temporarily) depressing prices. However, even the used loaded Teslas, even at these "reduced" prices ($70-90K) are still a bit steep for many people. I've noticed that the S60 and S80 models don't seem to have been cut by 50% like some of the 85P and 85P+ models. This will eventually change with the next new introduction by Tesla (X, 105 KWh battery, Model 3, auto driving, new tech package, or what ever). Prices will continue to decrease, ratcheting down into the $50K, $40K, $30K and even (gasp) below $10K so that eventually, even the minimum wage worker will be able to afford a Tesla. Look a similar premium sedan vehicles that are currently 20 yo. Many are pretty beat up and sell for less than $5K. It won't happen soon, but I think it will happen when the new 120 KWh, auto driving version with noise canceling is introduced in 2025 or so. The biggest problem with used Teslas will be how can they be repaired/maintained if Tesla doesn't allow it or tries to prevent unauthorized access to the "proprietary" systems (we're seeing the first indications of this now, but what will happen in the future when there are 200,000 used vehicles > 10 yo?