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Japan - Fuel Economy & CO2 emissions
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Japanese fuel economy standards are the joint responsibility of the Ministry of Land, Infrastructure, Transport and Tourism (MLIT) and the Ministry of Economy Trade and Industry (METI). Fuel Economy standards were first applicable from 2005 for light duty diesel vehicles and from 2010 for light duty gasoline and LPG vehicles. In 2007 new standards were established, which are applicable from 2015.
New passenger cars standards are in place from 2020, and new standards for light commercial vehicles from 2022 have been published; both these sets of standards use a corporate average methodology. Updated fuel economy standards for passenger cars, for the year 2030 and after, have been published.
The world's first fuel economy legislation for heavy duty vehicles is in place from the 2015 model year. The fuel consumption of heavy duty vehicles is derived from simulation using inputs from measured engine dynamometer test results.
Last update: 04/12/2020