I find it difficult to understand the amount of angst this thread has generated
I have a April build 2021v MiC M3 LR.
I don't really care who made the battery, or what the published "Official" range is: as with ICE MPG figures they are virtually meaningless.
My experience is that over 4000 miles of very mixed driving the average energy consumption is shown as 259 wh/mile, it ranges from 199 to 450, depending on where and when I drive. Assuming a 75kwh battery (is it?) and keeping it charged between 10% and 90% that gives me an available charge of 80% of the battery or 60kwh or 231 miles. I'm sure it will decrease in the winter.
Most of my charging is at home, but when I have arrived at a V3 Supercharger with less than 10% battery the initial charge rate was 220kw, it slowed and was at about 120 when it stopped at 90%. I monitor battery %, not range.
The car works, meets my needs and is fun to drive.