An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

Regulations for Emissions from Vehicles and Engines

Searching for Hidden Costs: A Technology-Based Approach to the Energy Efficiency Gap in Light-Duty Vehicles, Presentation made at the Association of Environmental and Resource Economists Annual Conference

This presentation contains research on consumer issues, including an assessment of vehicle affordability, a study of willingness-to-pay for various vehicle attributes, and content analysis of auto reviews.

You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.

Regulations for Emissions from Vehicles and Engines Home