VK Turbo: when Holden released the SIDI in 2009, they made two claims in their advertising -
that the 3.0 Litre would get 900km; and
that it would get from Sydney to Melbourne without refuelling -
clearly, GM has a different atlas to the rest of us.
Anyway, my best from a full tank was 898 km - all in one day, in Queensland, rain on & off, a lot of roadworks, and I doubt that I ever got above 110 kph - probably averaged about 100 kph.
Before I refuelled, I did the "engineering mode" trick, and it said that I had 0.2 L remaining.
When I refuelled, the bowser said that I added 73.1 L.