25 miles left and 26.03 litres put in
43 miles left and 23 .75 litres put in
during the same journey on a 30 litre tank
someone brighter than me can work all that out
the maths makes sense for both if you were at 30 mpg - any-more and your gauge is off whack - at a more likely 46mpg its got 40 miles left at the first refill and 63 the second and repeats on both sets of data
if we say runs out and 30 ltr fills it up
fill...................................... 26.0
tank size............................ 30.0
litres left............................. 3.97
ltr / per gal.......................... 4.56
act mpg............................. 30.0
miles per litre...................... 6.6
distance to empty had been. 26.1
and gets even worse if you can put 32ltrs in there @46mpg
fill...................................... 26.0
tank size............................ 32.0
litres left............................. 5.97
ltr / per gal.......................... 4.56
act mpg............................. 46.0
miles per litre...................... 10.1
distance to empty had been. 60.2