F10 M5 dash question

[michael_JCWS]

On the OBC you can select to see miles left to empty, I have noticed when you have a trip plotted on the sat nav you also get a round dot on the miles left line, can't find anything in the manual, anyone know

Cheers

Michael

[michael_JCWS]

Many thanks, thought as much but wasn't sure, not very accurate!!