It is a rare occasion I let the fuel light come on but di so week ago after a long highway round trip. Averaged 75-80mph with maybe 20 miles around town non highway. Summer 20" shoes on. It is a rare day we break 400 miles per tank so it was a Kodak moment.
But from above clearly I had more to go in the tank vs prior poster.
Those were both sitting level. Here is one on a slight hill, nose down.
Long term tracking is on the fuelly site. Sometimes the summary screen is a little painful to see:
And you can see the jump in miles when the winter gas ends
Interesting fuel stats here: no idea how accurate but they have a decent sample set
http://www.fuelly.com/car/bmw/x5
Junkycosmos
2005 4.8is