https://www.reuters.com/investigates/special-report/tesla-batteries-range/
It's not just an ideal conditions thing, Tesla is further away from their EPA estimates than every competitor. It's borderline fraudulent and I wouldn't be surprised to see it at least land in court.
I would buy any number of things from anyone else because of how big a liar Elon is, and how much he seems to get involved in fucking things up.