California Air Resources Board

CARB is authorized to adopt standards, rules and regulations to achieve the maximum degree of emission reduction possible from vehicular and other mobile sources in order to accomplish the attainment of the state ambient air quality standards at the earliest practicable date.  CARB's fuels effort is made up of several components which broadly fall into two categories: (1) adopting and enforcing fuel specifications, and (2) controlling emissions from marketing and distributing fuels in California.

Updates to various California fuels regulations and programs are being considered, including potential updates to the existing gasoline, diesel, and alternative fuels regulations.  The focus of future changes are to update existing fuels regulations and programs, and continue to reduce criteria pollutants from California’s fuels, as California transitions away from the combustion of fossil fuels.