We just completed a 29 day trip in a Toyota 4 wheel drive hilux. It took diesel (about 12.7 Namibian per liter). We averaged abt 8.86 km per liter. We did a circuit from Windhoek to windhoek--down to fish river, up to sossusvlei via the namib, up to swakopmund, over to erongo, up to damaraland, up to and across etosha, down to grootfontein, down to Africat, and finally Windhoek. Travelled 4156 km and spent $641 u.s. for fuel.