Frequent Questions

Do products - fuel economy devices or fuel additives - that claim to improve fuel economy or lower emissions really work? Some say they are EPA-certified.

The EPA Office of Transportation and Air Quality addresses this question about fuel economy devices and fuel additives on the following Web page:

You may find more information about gasoline standards and registered gasoline additives on the following Web pages:

You may also contact the EPA Fuels Program for assistance by visiting the following Web page:

Have more questions? Submit a request

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