In my 92 pickup when the gauge reads half a tank sometimes it will be 32L and sometimes it will be 38L. Sometimes a bit more. So the gauge is not completely accurate. I can put 160kms on my truck after filling up before the gauge even starts to move. But I know its gone down some. If I'm easy on the gas I can get over 250 miles at half. Like the others said record your mileage and then convert it to miles from kms, use 3.79L/gal for your fuel conversion and you will have it. Or post up in L/100km.

 

i get really good mileage in 5th gear. but with my big tires and stock gears. i have to do at least 65-70mph to have enough power to maintain speed