![]() In the Levant km/20 L is used, known as kilometers per tanaka, a metal container which has a volume of twenty liters. Kilometers per liter (km/L) are more commonly used elsewhere in the Americas, Asia, parts of Africa and Oceania. Units of distance per fixed fuel unit Miles per gallon (mpg) are commonly used in the United States, the United Kingdom, and Canada (alongside L/100 km). A lower number means more efficient, while a higher number means less efficient. The window sticker on new US cars displays the vehicle's fuel consumption in US gallons per 100 miles, in addition to the traditional mpg number. Liters per 100 kilometers may be used alongside miles per imperial gallon in the UK. Canadian law requires fuel economy to be measured in both liters per 100 kilometers and miles per imperial gallon. Irish law allows for the use of miles per imperial gallon, alongside liters per 100 kilometers. Units of fuel per fixed distance Generally expressed in liters per 100 kilometers (L/100 km), used in most European countries, China, South Africa, Australia and New Zealand. gallon red, imperial gallonįuel economy is the relationship between the distance traveled and fuel consumed.įuel economy can be expressed in two ways: Driver behavior can affect fuel economy maneuvers such as sudden acceleration and heavy braking waste energy.Įlectric cars do not directly burn fuel, and so do not have fuel economy per se, but equivalence measures, such as miles per gallon gasoline equivalent have been created to attempt to compare them.Ĭonversion from mpg to L/100 km: blue, U.S. Various strategies can be employed to reduce losses at each of the conversions between the chemical energy in the fuel and the kinetic energy of the vehicle. The energy in fuel is required to overcome various losses ( wind resistance, tire drag, and others) encountered while propelling the vehicle, and in providing power to vehicle systems such as ignition or air conditioning. Different methods are used to approximate the actual performance of the vehicle. Since fuel consumption of vehicles is a significant factor in air pollution, and since the importation of motor fuel can be a large part of a nation's foreign trade, many countries impose requirements for fuel economy. Consumption can be expressed in terms of the volume of fuel to travel a distance, or the distance traveled per unit volume of fuel consumed. The fuel economy of an automobile relates to the distance traveled by a vehicle and the amount of fuel consumed. Originally an experiment in creating a fuel-saving automobile in the United States, the vehicle weighed only 135 lb (61.2 kg) and was an adaptation of a small gasoline engine originally designed to power a bicycle.
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