We did an 8 week trip last year into the Red Centre, from Brisbane, via Birdsville, Oodnadatta Track, Mt Dare, even up to Kakadu. We travelled 12,360 Km’s. Total fuel used 1764.51L. Fuel was the biggest cost at $2,940 works out at $51.59 a day. Dearest fuel was at Oodnadatta at the Pink Roadhouse @ $2.27, cheapest was $1.40 back home. Average fuel consumption 14.28 ltrs/100k.