well yesterday i finished a SyD-Snowy-Syd trip yesterday
R32 GTR
@ 110-120 it sits under 4000 rpm in 5th gear id say around 3700ish rpm
fuel consumption isnt that bad on my car as it is tuned with power FC
and i do around 550kms per tank which is a lot. for my car
all in all i filled up 3times and i still have more than half a tank of fuel left.
during this whole trip i covered over a 1000kays