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Stronger Fuel Economy Standards Are Needed to Clean Up Combustion Vehicles

Union of Concerned Scientists

leader in cleaning up the light duty fleet quietly released its own proposal in August: the Department of Transportation’s National Highway Traffic Safety Administration (NHTSA) has proposed to improve fuel economy of passenger cars and trucks steadily from 2027 through 2032 and heavy-duty pickups and vans from 2030 to 2035.

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Ask a Scientist: Top Takeaways from the New EPA Carbon Pollution Rules

Union of Concerned Scientists

The rule, which also applies to new gas plants, would avoid as much as 617 million metric tons of carbon dioxide through 2042, the EPA calculated , the equivalent of the annual emissions of 137 million passenger vehicles—about half of the cars in the country. Those currently operating fossil fuel plants generate 25 percent of U.S.