The last part is one thing that occurred to me. I rented a Model X recently via Turo and struggled for an entire day with the car operating at <20 miles of ind

The last part is one thing that occurred to me. I rented a Model X recently via Turo and struggled for an entire day with the car operating at <20 miles of indicated range (due to the long trip to pick it up + no local charging options above 7kW). At the time I wondered if there was 'reserve' range and turns out there is at least one mile left. But it's clear this isn't the healthiest range to run the battery in. It's possible they bumped the minimum charge a bit just to urge people to not dip so deeply into the well as often.