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energy>Jmdonev at 02:41, 13 August 2018

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[[File:Fuel_Economy_Label_B.jpg|400px|thumbnail|right|Figure 1. This is an example of a sticker that would be on a car to state the fuel economy. The red X is the fuel consumption.<ref>"Fuel Economy Label B.jpg", En.wikipedia.org, 2018. [Online]. Available: https://en.wikipedia.org/wiki/File:Fuel_Economy_Label_B.jpg. [Accessed: 19- Jul- 2018].</ref>]]
<onlyinclude>'''Fuel consumption''' and '''fuel economy''' are two phrases that are sometimes used interchangeably but have very different meanings. The core difference involves fuel consumption discussing ''how much fuel'' a car consumes to go a certain distance and fuel economy measures ''how much distance'' a car gets out of fuel. Therefore, they have an ''inverse'' relationship.<ref name = "2011a">"Assessment of Fuel Economy Technologies for Light-Duty Vehicles", 2011.</ref></onlyinclude> While the meanings are similar, there is a slight difference worth noting:<ref>MIT Engineering. (2015, Mar.7). ''What is the difference between fuel efficiency and economy?'' [Online]. Available: https://engineering.mit.edu/ask/what%E2%80%99s-difference-between-fuel-efficiency-and-fuel-economy</ref>

:[[Fuel consumption]] measures the amount of fuel a car consumes to go a specific distance. It is expressed in [[liters per hundred kilometers]]—or in countries that use the imperial system, miles per 100 gallons. For example, a Volkswagen Golf TDI Bluemotion has one of the best fuel consumption ratings, requiring just 3.17 [[litre]]s to go 100 [[meter|kilometers]].<ref> Nikki Gordon-Bloomfield. (2015, Mar.7). ''Volkswagen Golf BlueMotion: High-MPG Diesel Is Forbidden Fruit For Us'' [Online]. Available: http://www.greencarreports.com/news/1085403_volkswagen-golf-bluemotion-high-mpg-diesel-is-forbidden-fruit-for-us</ref> Therefore, the ''smaller'' the value, the better the rating is.

:[[Fuel economy]] is measured in [[miles per gallon]]<ref name = "2011a"/> (or in [[electric vehicle]]s, [[miles per gallon gasoline equivalent]] (MPGe)), and refers to how far a car can go using a set amount of fuel. Since this is the inverse of fuel consumption, the ''larger'' the value, the better the rating. Sometimes, the term [[fuel efficiency]] is used. Its important to note that this is a colloquial term which is used in place of fuel economy. However, a true fuel efficiency should be expressed by a percent which measures how much of the fuel is used to power the movement of the car, vs the total amount of fuel that was injected.<ref>This is information obtained from speaking to John Heywood, Professor of Mechanical Engineering at MIT; Sun Jae Professor, Emeritus</ref>

[[File:MPG illusion.jpg|framed|center|The graph above shows the fuel economy on the horizontal axis and the fuel consumption on the vertical axis. Note that fuel consumption does not decrease at a linear rate with fuel economy (MPG) increase.<ref>EPA. (Accessed September 23, 2015). ''Fuel Consumption Rate'' [Online], Available: http://www.epa.gov/carlabel/electriclabelreadmore.htm</ref>]]

==For Further Reading==
*[[Fuel]]
*[[Fuel economy]]
*[[Gasoline engine]]
*[[Diesel engine]]
*[[Electric vehicle]]
*Or explore a [[Special:Random|random page]]

==References==
{{reflist}}
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Fuel consumption vs fuel economy - Revision history

Jmdonev: 1 revision imported

energy>Jmdonev at 02:41, 13 August 2018