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Tesla exaggerating EV range for over a decade
(arstechnica.com)
This is a most excellent place for technology news and articles.
I've found the max range on the Hyundai Kona EV's is fairly accurate. It can vary quite a bit with stuff like AC/heat but generally in reasonable weather it gets close to what was advertised.
I have to say the same for the Kia EV6. After a fill charge, driving a few miles on the road yields a very accurate estimate.