California Certification Fuel

This page last reviewed November 1, 2012

The California Air Resources Board developed a new certification fuel for 2015 and newer vehicles that closely resembles in-use fuel. The current certification fuel contains methyl-tertiary butly ether (MTBE), which has been banned in California gasoline since December 31, 2003.  The certification fuel for 2015 and newer vehicles contains 10 volume percent ethanol (E10) instead of MTBE.  This page contains information related  to California's certification fuel.

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