I took a road trip to WA (from Sydney) over the holiday season and notticed differences on fuel consumptions between NSW and WA. I have the 09 model Kluger and I always put in premium ULP either from Shell or Caltex . The car normally assumed around 10 Lt/100km when travelling long distance at eastern states (QLD, NSW, Melb). When I was in WA, the consumption went up to around 13 Lt/100km and at one stage, I suspected the car was having trouble. So I decided to keep the record on my way back. See below of the chart: Petrol Station Location Petrol Type Price ($/Lt) Consumption (Lt/100km) Note Esperance (WA) Caltex 98Vortex $1.44 13.1 Balladonia Road House (WA) BP 91 $1.80 15.5 Added $52, Still have 1/5 of a tank when filling Cocklebiddy (WA) BP Premium $1.90 16.1 Added $84.51 to the empty tank (distance to travel = 0) Eucla (WA) Caltex Standard ULP $1.61 14.7 Added 2 Lt from the Jerry tank on the way, empty when filling Ceduna (SA) Shell V-Power $1.52 12 Added all petrol from the Jerry Tank on the way Port Augusta (SA) Shell V-Power $1.33 12 Broken Hill (NSW) Caltex Vertex 95 $1.41 11.5 Cobar (NSW) Shell 95 $1.43 11.6 Dubbo (NSW) Shell V-Power $1.38 10.2 Still have 1/3 of Petrol in Tank after 400km of travel So I concluded there must be some Fuel substances being used in WA, specially for those petrol stations located on the Eyre High Way. I would not mind paying extra for fuel when travelling at remote area like Eyre HighWay but I do not like the fuel consuption rate is so high (a full Tank goes $350km instead of $600). I would have been in trouble if I did not have the 20Lt Jerry Tank with me. Does anyone has the same experience?