https://en.wikipedia.org/wiki/Engine_efficiency efficiency http://en.wikipedia.org/wiki/Engine_efficiency Gasoline engine http://en.wikipedia.org/wiki/Engine_efficiency Diesel engines http://en.wikipedia.org/wiki/Engine_efficiency engine that's 25-30% efficient Engine efficiency engine that's 25-30% efficient Gasoline engine friction-causing negatives Diesel engines engine efficiency efficiency of engines Engine efficiency engine that's 25-30% efficient http://en.wikipedia.org/wiki/Engine_efficiency engine that's 25-30% efficient only about 25-30% efficient 25% efficiency Wikipedia Diesel engines Diesel engines 25 to 30% efficiency of a gas-burning engine engine efficiency Kilde: Wikipedia efficiency of only 30% Source http://en.wikipedia.org/wiki/Engine_efficiency engine efficiency Wikipedia engine efficiency engine efficiency Wikipedia Wikipedia https://en.wikipedia.org/wiki/Engine_efficiency Wikipedia http://en.wikipedia.org/wiki/Engine_efficiency 25 to 30% efficiency of a gas-burning engine Wikipedia эффективность двигателя Gasoline engine Engine efficiency engine efficiency Diesel engines Diesel engines Gasoline engine https://en.wikipedia.org/wiki/Engine_efficiency engine efficiency Gasoline engine Wikipedia http://en.wikipedia.org/wiki/Engine_efficiency engine that's 25-30% efficient Diesel engines Gasoline engine https://en.wikipedia.org/wiki/Engine_efficiency Diesel engines Gasoline engine Gasoline engine Diesel engines Gasoline engine engine inefficiency ICEs are considerably better than 13% Wikipedia are far from it per Wikipedia engine efficiency 25% efficiency English engine efficiency 25% efficiency Wikipedia engine efficiency https://en.wikipedia.org/wiki/Engine_efficiency