Environmental Advocates Take Legal Action Against MPG Rollback
WHO:
ABC News - A group of environmental organizations, including the Sierra Club, the Center for Biological Diversity, the Conservation Law Foundation, the Environmental Defense Fund, and Public Citizen, filed the lawsuit against the Trump administration.
ABC News - Katherine Garcia, director of Sierra Club’s Clean Transportation for All program, stated the lawsuit's purpose.
ABC News - Transportation Secretary Sean Duffy and Jonathan Morrison, the administrator of the National Highway Traffic Safety Administration, are named in the lawsuit.
WHAT:
CBS News - Environmental groups sued the Trump administration over the rollback of vehicle fuel economy standards.
ABC News - The Trump administration lowered Corporate Average Fuel Economy (CAFE) standards to an industry fleetwide average of roughly 34.9 miles per gallon for passenger cars and light trucks in the 2031 model year, down from a projected 50.4 miles per gallon under rules set by the Biden administration.
ABC News - The lawsuit was filed in the U.S. Court of Appeals.
ABC News - Gas prices have hovered around $4.50, and diesel prices have reached unprecedented heights in recent weeks, according to AAA.
ABC News - The Department of Transportation stated that the new rule would cut yearly oil consumption in 2050 by about 1.3 billion barrels compared to yearly oil consumption in 2024.
WHERE:
ABC News - The lawsuit was filed in the U.S. Court of Appeals.
WHEN:
ABC News - The lawsuit was filed on a Friday, following the Trump administration's announcement on a Monday regarding the rollback of fuel economy standards.
WHY:
CBS News - Environmentalists argue that reducing fuel-efficiency standards will raise prices at the pump and produce more harmful emissions.
ABC News - Environmental groups claim the rollback will make vehicles less efficient, contribute to more pollution, and increase gas consumption.
ABC News - Katherine Garcia stated that the rollback prioritizes Big Oil and automaker profits over American families.
ABC News - David Pettit, an attorney at the Center for Biological Diversity, criticized the timing of the rollback amid high gas prices.
HOW:
ABC News - The Trump administration's decision involved lowering the CAFE standards, which dictate how far new vehicles must travel on a gallon of gasoline.
(UPDATED October 3, 2026 16:36 UTC)
A coalition of environmental organizations, including the Sierra Club and the Center for Biological Diversity, has filed a lawsuit against the Trump administration in the U.S. Court of Appeals over the rollback of vehicle fuel economy standards. The lawsuit challenges the administration's decision to lower the Corporate Average Fuel Economy standards to approximately 34.9 miles per gallon for the 2031 model year, a significant drop from the 50.4 miles per gallon projected under the Biden administration. Environmentalists argue that this rollback will not only increase gas prices and emissions but also prioritize the profits of Big Oil and automakers over the well-being of American families.