Fuck Cars
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I'll say it again and again and again.
As long EVs can't capture the used car market, their impact in climate is non existent.
Even worse, what do people think will happen to all those EVs in 10 years? There are no hand downs of cars with used up batteries and people that have to resort to buying 10+ year old cars don't have the spare change to get the battery replaced.
What do you think the average 10 year old car has done to that point? Battery degradation is hugely overrated and stories are based on tech already left behind.
The actual problem for the used car market is the opposite: EVs live much longer than traditional cars and thus don't lose their worth that rapidly, while on the other hand new cars still see a fast development cycle while also getting cheaper.
So no, it's not a problem of used EVs per se and that their expensive batteries are allegedly dying. It's the fact that a new EV just a couple of years later is ahead 1-2 generations and also cheaper.
Whole lotta citations needed. Here's mine:
https://nymag.com/intelligencer/article/who-wants-to-buy-30-000-used-teslas-from-hertz.html
https://www.teslaownersonline.com/threads/tesla-from-hertz.31723/
Batteries losing more than 20-25% of their capacity in 150.000km had a defect in production already. You can find similiar numbers in any OEM's warranty. So a non-defective battery will provide at least 80% of its capacity at 150.000km. The average car manages about 250.000km over their life-time of about 15 years (reference numbers from the US, so the most pessimistic view as barely anyone else in the world is matching those distances).
You are not completely wrong. Used batteries will be a problem... somewhere far down the road because electric vehicles are expected to easily manage 800.000km or more (less moving/wear parts).
But we are not there yet. The whole EV market isn't old enough to have produced these long-lived vehicles and we are back at my original point. Today it's not about battery degradation but about EVs not getting old fast enough to already have established a robust used market. In fact the first big batch of EVs on the used market is often not expected for another 2 years (see here for example, and that's again rather new vehicles because of a loophole for leased cars in the EU).
In short: There isn't a huge used EV market yet and (more importantly) the demand is stifled by battery degradation fairy tales not relevant (EVs old enough for this basically don't exist yet) and political mismanagement subsidising new EVs.