I don't think Consumer Reports views "reliability" as power train only. They look at the entire car and how it performs as a whole. In that 2020 article the Teslas were ranked 23rd out of 30 brands for reliability (overall). That's not something Tesla wants to talk about. And when reading through the other forums on this site it is surprising how many people who formerly owned a Tesla have now switched to some other brand.
We know 1 in 5 EV owners switched back to gas powered cars. But I don't know the answer to your question.
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