[itsdrewmiller]

It does have low fuel warning although I don't think my car actually enabled it. You can search on your route with carplay but the experience is significantly worse than doing it from your phone (and it nanny state disables using your phone navigation - you have to use the carplay UI). I don't think it integrates with gas tank status.

[mulmen]

With the BMW system a low fuel warning with a destination set puts a prompt on the nav screen that says “do you want to add this stop?” With directions to the nearest gas station. You push the nav control button (not a screen!) once to accept the change or do nothing to continue.