Clean Fuels Alliance America is the latest group to file a lawsuit against the Environmental Protection Agency over emissions standards.

Clean Fuels asked the U.S. Court of Appeals for the D.C. Circuit to review the Environmental Protection Agency’s final Greenhouse Gas Emissions Standards for Heavy-Duty Vehicles-Phase 3. In the final rule, EPA evaluated a range of potential alternative fuel and engine configurations for 2027-2032 heavy duty vehicles. However, the agency specifically declined to consider biodiesel and renewable diesel in combination with existing engines that are already widely available.

“EPA put its thumb on the scale to favor electric and hybrid vehicles that are not guaranteed to be widely available in the timeframe addressed by this rule,” said Kurt Kovarik, Vice President of Federal Affairs for Clean Fuels Alliance America. “The agency refused to consider the increasing availability of biodiesel and renewable diesel as an achievable, affordable technology for meeting the goals of the heavy-duty truck rule by 2032.”

Multiple organizations have filed lawsuits against aspects of EPA’s recently finalized emissions standards representing biofuels producers, farmers, truckers, car dealers, and the oil industry.