Calculate Miles per Gallon
I already put together a little post on how to calculate your fuel economy in miles per gallon (MPG), but not everyone is interested in that particular measurement. That's 'cause there are only a few countries who use the imperial system of measurement (feet, quarts, miles and gallons), so the phrase "miles per gallon" doesn't mean much to people who live outside the USA.
Calculate Liters per 100 km
In most of the countries that use the metric system, people share their fuel economy with a number called l/100km, or liters per 100 kilometers instead of the MPG so familiar to people in the States. You just need two numbers to calculate l/100km, though the division is a little different from what you're used to.
