Seven national associations representing the renewable fuel supply chain sent a letter this week to EPA Administrator Michael Regan asking him to adopt a market-oriented, technology-neutral approach to transportation decarbonization in its upcoming final tailpipe emissions standards for 2027-2032 light- and medium-duty vehicles.

The groups wrote that the proposed rule favors electric vehicles while failing to consider the decarbonization potential of existing biofuels that can improve the emissions profile of the vast majority of cars on the road today. The organizations recommend that EPA account for all emissions relating to different fuel and engine technologies and equitably incentivize emissions reductions from all of those technologies.

If finalized as proposed, EPA expects its tailpipe emissions standards could result in EVs accounting for 67% of new light-duty vehicle sales and 46% of new medium-duty vehicle sales by 2032. “The speed at which the Agency appears to anticipate the market and consumers will transition to electric vehicles is divorced from our members’ assessment of reality,” according to the letter. “The Proposed Rule does not appreciate the market obstacles associated with such a massive transition in consumer behavior. It also abandons proven decarbonization technologies, such as higher-octane liquid fuels, that can deliver material emissions reductions using existing infrastructure, existing vehicles, and working with consumers’ existing behavioral proclivities.”

The organizations submitting the letter include the Renewable Fuels Association; National Association of Convenience Stores; NATSO, Representing America’s Travel Plazas and Truckstops; National Corn Growers Association; National Farmers Union; SIGMA: America’s Leading Fuel Marketers; and Growth Energy.