[QUOTE="High"] Actually, it is. It's Imperial gallons. Multiply by 0.8 to get U.S. gallons, which in this case would be about 38.8 mpg(U.S.).[/QUOTE] Er, you sorta got that backwards... 1 U.S. fluid ounce = 29.573 529 562 5 mililitres = 1.041 Imperial fluid ounces 1 Imperial fluid ounce = 28.413 062 5 mililitres = 0.961 U.S. fluid ounce 1 liquid U.S. gallon = 3.785 411 784 litres = 0.833 Imperial gallon JT