Quote Originally Posted by ROBERT View Post
Thanks guys but I am asking for the consumption at STEADY CRUISING speeds NOT averaging over a run. I keep an acurate fuel consumption log and averaging 7.3l/100k since I had the car new, my best is 6.3l/100km on a run down from QUeensland.
the only way you can get a decent run is if you drive from 1 servo w/ full tank & zero'd tripmeter then fill up at the next coming servo and check it out to calc. But still averages around 6-8L/100 no matter for highway driving.

There is no way you can check otherwise.