Fuel efficiency, in its basic sense, is the same as thermal efficiency, meaning the efficiency of a process that converts chemical potential energy contained in a carrier fuel into kinetic energy or work.


Overall fuel efficiency may vary per device, which in turn may vary per application. Non-transportation applications, such as industry, benefit from increased fuel efficiency, especially fossil fuel power plants or industries dealing with combustion, such as ammonia production during the Haber process.


In the context of transportation, "fuel efficiency" more commonly refers to the energy efficiency of a particular vehicle model,

Hybrid vehicle[]

Hybrid vehicle designs use smaller combustion engines as electric generators to produce greater range per unit fuel than directly powering the wheels with an engine would,

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--Dore chakravarty 21:09, 21 April 2009 (UTC)

(Please wait for completion)

Dore chakravarty 23:56, 1 May 2009 (UTC)