That about the average distance for a tank in a VE, as they are only 73L tanks
The VT/VX/VY & VZ had 75L tanks. [but could usually squeeze 77L's in them]
I had a 3.0L 6 Speed 2009 VE Berlina Wagon [prior the 2012 VE I have now] and did a bit of a road trip in 2011 along the west coast to Adelaide to see the relatives over there in Elizabeth North,
Spent a few days over there going to the usual places, Hahndorf, Glenelg & The Barossa and got fairly good economy, getting over there and visiting the tourist places.
But the Best economy was when I filled it up at the Shell on Main North Road at the Elizabeth Shops Intersection [Some of the Adelaidians would know where that petrol station is], and I got all the way from there to Hampton [Southern Suburbs of Melbourne] on one tank, being the low fuel warning came on coming over the Westgate Bridge, knowing it had approx. 60k/m remaining,
I just kept going till I filled up at the Shell Petrol Station on Bluff Road Hampton.
And I had 2 other people in the car. and some luggage in the back.
Also could not lead foot it, stuck to the speed limits and used cruise control on the open roads.
It was a fantastic car. But not my idea of a highway car carrying a load in the back every day, as it struggled as work car.