Since the engine swap to the 3.5l, I'm averaging ~10.8L/100km's so over 600km's per tank. Do around 50km's per day at 100kmh, rest is between 50 and 80, ~450km's per week. I'd like to get it a wee bit lower, seeing fuel is a bit pricey at present. Tried a 7-11 fuel for a few weeks, definitely worse consumption on that compared to my usual United (BP, Shell and Caltex are the other way to what I drive in Cranbourne).