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Hertz Is Selling 20,000 Used EVs Due To High Repair Costs
(arstechnica.com)
This is a most excellent place for technology news and articles.
My guess is that repair costs are higher because they have to be sent out for expensive repairs because the car software is locked down so they cannot repair them in-house.
That's what the future is coming to with cars. No more fixing with your own parts at home.
Note that Tesla, specifically, does not allow any third-party repairs. They simply don't make the parts available to independent shops. They are very much like Apple in this regard.
From my understanding, EVs from Chevy and Ford follow the same model as their ICE models. You may have difficulty finding independent mechanics that can work on their EVs, but it's not because the manufacturer is freezing them out.