km/l used to be the unit to measure fuel econonmy of a car similar to the miles/gallon. Many metric countries changed the method of using fuel consumption instead of fuel econonmy. Fuel consumption is measured in l/100km. I find it more useful and easier to determine how much gas and money I will use on a trip if I know the average km/l for a car. Many of the mileage programs I used before do have the options to choose between km/l and l/100km. It's great if you are able to include this in the next update. Otherwise, it's not a big deal, it's a great program as it is. Thanks.