I don't know how it is done with EVs but my gas car usually underestimates my range despite me burning more fuel than what's written on the brochure.
It is common sense to take conservative estimates when you are missing data. The range indicator on the dashboard is a "will I make it" indicator. To help me decide if I need to plan a refuel/recharge. I don't want a best case scenario, not even an average, I want something like a 90 percentile.
In good conditions, the "enhanced" estimate (with nav) should be more than the baseline, as some of conservative estimates can now be replaced with more accurate data.
It is common sense to take conservative estimates when you are missing data. The range indicator on the dashboard is a "will I make it" indicator. To help me decide if I need to plan a refuel/recharge. I don't want a best case scenario, not even an average, I want something like a 90 percentile.
In good conditions, the "enhanced" estimate (with nav) should be more than the baseline, as some of conservative estimates can now be replaced with more accurate data.
Good thing Tesla is not doing airplanes.