About the AG

  • Subscribe to the AG's RSS Feed
  • Join the AG's FaceBook
  • Follow the AG on Twitter
  • View the AG's YouTube Channel
  • View the AG's Tumblr Page

California’s Clean Car Standards

Under the Clean Air Act, California has a special role as an innovator and leader in the area of motor vehicle emission regulations. Congress authorized California – and only California – to adopt motor vehicle emission standards that are stricter than federal requirements. Before California can enforce its standards, however, it must obtain permission (a "waiver") from the U.S. Environmental Protection Agency (EPA). Once EPA grants the waiver, other states may adopt California’s standards.

Image of a car exhaust tip.

In 2002, California set state standards for the emission of greenhouse gases (GHG) from motor vehicles (AB 1493, commonly known as the “Pavley” law). In December, 2005, California applied to EPA for a waiver to implement its standards. The Bush Administration's EPA delayed action on California's request for over two years, finally denying it in March 2008 without any reasonable basis. On the change of Administration, the California Air Resources Board (CARB) requested that EPA reconsider its denial, and in June 2009, EPA granted the waiver. Read the waiver decision, pdf.

Once EPA granted the waiver, the automobile industry filed numerous lawsuits across the country. Because of the Attorney General’s work, and that of many other attorneys general across the nation, the industry lost every case.

California’s Pavley standards took effect for model years starting in 2009 to 2016. These standards will result in approximately a 30% reduction in greenhouse gas emissions through 2016 in California, and substantial additional reductions in other states. In addition, the standards will give consumers more choices, as manufacturers add technologies to cars and trucks that increase efficiency, decrease air conditioning leakage, and allow for the use of alternative fuels.

The State, through CARB, is contining its work on a comprehensive Advanced Clean Car Program. The program combines the control of smog-causing pollutants and greenhouse gas emissions into a single coordinated package of standards. CARB's work will guarantee that the automobile industry must continue to innovate, benefitting consumers and the environment.

Megan's Law

California Registered Sex Offender Database

Search Now

Megan's Law information is also available in these languages:

Site Navigation

Translate Website

  • Google™ Translation Disclaimer

This Google™ translation feature is provided for informational purposes only.

The Office of the Attorney General is unable to guarantee the accuracy of this translation and is therefore not liable for any inaccurate information resulting from the translation application tool.

Please consult with a translator for accuracy if you are relying on the translation or are using this site for official business.

If you have any questions please contact:Bilingual Services Program at (916) 324-5482

A copy of this disclaimer can also be found on our Disclaimer page.

Select a Language Below / Seleccione el Idioma Abajo

Close this box or use the [ X ]