In Europe the manufacturers are legally bound to quote the WLTP range. Which is hopelessly inaccurate… But nowhere near as bad as the NEDC that preceded it. Of course people still come on forums wondering why they don’t get <50% more than actually possible> out of their car, and I don’t blame them… the law is an ass.
TBF to Tesla though the in-car estimate is (I think) EPA and isn’t far off… It’s doable in summer, at least. Winter you’ll lose 30% but that’s normal for all cars.