I must admit, I cannot advise!!!!
See, the tank was nearly full when I collected the bike from KTM on Thursday, so I topped it off with some fuel I had in a can (fresh) to around 4cm from the filler neck - so maybe a litre short of full?
Drove around 260km until reserve, and another 40km home on reserve.
You can see the fuel left in the tank on the pic below (just below the "Argentina" sticker) - but thats all below the fuel pickup point - so you cant really use it.
Stupid system.
The ACTUAL owner will fill it up in a couple of weeks and we will have an idea of economy then......
Just looked at the Acerbis website, and I believe this is the 15-litre tank with the offset filler - so I imagine we are using around 3.5-4 L/100km? Roughly?
View attachment 943039