Since EPA began keeping data in 1975, vehicles now are roughly 99% cleaner for common pollutants (hydrocarbons, carbon monoxide, nitrogen oxides and particle emissions), which can help alleviate adverse health effects such as asthma and heart problems, and limit hospital days and cancer. In addition, fuel economy in the United States has improved from 13.1 miles per gallon in MY 1975 to 27.1 mpg for MY 2023 vehicles.

“Despite these significant improvements in local air pollution that have benefited Americans, passenger cars and light trucks still accounted for nearly 17% of total U.S. GHG emissions in 2022, indicating the importance of further reductions in GHG emissions and improvements in fuel economy,” EPA said. “This annual report indicates EPA’s commitment to provide the public with information about new light-duty vehicle greenhouse gas emissions, fuel economy, technology data, and auto manufacturers’ performance in meeting the nation’s emissions standards.”

EPA’s annual Automotive Trends Report is separate from the agency’s regulatory process, which is far more complex and has been subject to political and judicial interference funded by special interest groups. – AutoCrat.