Heavy Duty Trucking Logo
MenuMENU
SearchSEARCH

American Petroleum Institute Sues EPA Over Emissions Regulations

The American Petroleum institute has filed a lawsuit challenging the U.S. Environmental Protection Agency’s (EPA) heavy-duty (HD) vehicle emissions standards for model years (MY) 2027-2032.

Tractor loading a farm truck in a field.

The National Corn Growers and the American Farm Bureau have joined API's lawsuit challenging EPA's heavy-duty emissions standards regulations.

Photo: Mark Stebnicki

3 min to read


The American Petroleum Institute (API) has filed a lawsuit challenging the U.S. Environmental Protection Agency’s heavy-duty (HD) vehicle emissions standards for model years (MY) 2027-2032. API filed the lawsuit on June 18 in the in the D.C. Circuit Court of Appeals.

API represents all segments of America’s natural gas and oil industry, which supports nearly 11 million U.S. jobs. Its members produce, process and distribute the majority of the nation’s energy.

Ad Loading...

API has been joined in the lawsuit by the Owner-Operator Independent Drivers Association (OOIDA), National Corn Growers and the American Farm Bureau Federation. The American Farm Bureau is an advocacy group representing American famers and the agricultural industry.

Regulated Out of Existence

“Today, we are standing up for consumers who rely on trucks to deliver the goods they use every single day,” said API Senior Vice President and General Counsel Ryan Meyers. “The EPA is forcing a switch to technology that simply does not presently exist for these kinds of vehicles – and even if it were someday possible, it will almost certainly have consequences for your average American. This is sadly yet another example of this administration pushing unpopular policy mandates that lack statutory authority, and we look forward to holding them accountable in court.”

“Small business truckers make up 96% of trucking and could be regulated out of existence if the EPA’s unworkable heavy-duty rule comes into effect,” said Todd Spencer, president, Owner-Operator Independent Drivers Association. “This rule would devastate the reliability of America’s supply chain and ultimately increase costs for consumers. Mom and pop trucking businesses would be suffocated by the sheer cost and operational challenges of effectively mandating zero emission trucks, but this administration appears intent on forcing through its deluge of misguided environmental mandates. As the voice of over 150,000 small-business truckers, we owe it to our members and every small-business trucker in America to leave no stone unturned in fighting these radical environmental policies.”

Ad Loading...

One-Size-Fits-All Won’t Work

“EPA has tried to impose a one-size-fits-all approach to addressing climate change by prioritizing electric vehicles over other climate remedies like corn ethanol,” said Minnesota farmer and National Corn Growers Association President Harold Wolle. “But while it could take decades to get enough electric vehicles on the road to make a dent in GHG emissions, lower carbon fuels such as ethanol are critical and effective climate tools that are available now. Ethanol is not only critical in the climate fight, but it also saves consumers money at the pump while benefiting America’s rural economies. We look forward to making this case in court.”

“Farmers rely on heavy-duty trucks to transport livestock long distances, and they choose the most efficient routes to ensure the animals in their care remain on the vehicle for as little time as possible, said American Farm Bureau Federation President Zippy Duvall. “Unfortunately, heavy-duty vehicles that are powered by batteries have short ranges and require hours to charge. Impractical regulations will extend the amount of time on the road, putting the health and safety of drivers and livestock at risk if they need to stop for long periods of time to charge.”

Harvester loading a tractor-trailer in a field.

Lack of BEV charging facilities is a major problem for agricultural fleets operating in remote areas.

Photo: Tom Fisk

In April, the Biden administration finalized new federal emissions standards for heavy-duty vehicles (including commercial vehicles). In the final rule, EPA projects that there would need to be significant deployment of zero emission vehicles (ZEV) throughout the HD fleet to meet emissions standards. For example, over 40% of vocational vehicles (work trucks) would need to be ZEVs by MY 2032. Additionally, long-haul tractors (semi-trucks), which currently have no ZEV deployment, would need to go from zero percent today to 25% of the fleet by MY 2032.

More Fuel Smarts

Illustration of exhaust aftertreatment system on an AI-inspired blue background and a green fuel pump nozzle in the foreground.
Maintenanceby Deborah LockridgeJune 15, 2026

New Agentic Predictive Maintenance Report Demonstrates How Degraded Aftertreatment Systems Waste Fuel

Questar analyzed a large mixed-class fleet and discovered it was wasting as much as $30 in fuel per vehicle, per day, because of mechanically degraded aftertreatment systems.

Read More →
Amazon electric cargo bike on New York City street
Fleet ManagementJune 15, 2026

New York City's Microhub Project is Delivering Results

Trucking, last-mile delivery companies, and environmental advocates like what they are seeing so far with New York's microhub program.

Read More →
Red Kenworth truck pulling Paper Transport trailer
Fuel Smartsby Deborah LockridgeJune 2, 2026

Lessons Learned About Alternative Fuels: Start Small, Stay Flexible

Practical advice on adopting alternative fuels and ZEVs from HDT's 2026 Top Green Fleets, from renewable diesel and natural gas to electric trucks.

Read More →
Ad Loading...
Composite image of different angles of the Kempower charger
Fuel Smartsby News/Media ReleaseMay 29, 2026

Kempower Adds Flex EV Charger to Help Support Transition to Megawatt Charging

The Kempower Mega Satellite Flex has both a CCS and MCS connector, allowing operators to serve both types of heavy-duty vehicles.

Read More →
White Hino Le electric tractor on show floor
Equipmentby News/Media ReleaseMay 26, 2026

Hino Adds Electric Class 6/7 Truck

Hino says the Le Series is an important step in the company's efforts to reduce environmental impact and support its customers’ sustainability goals.

Read More →
Sigma Powertrain BEV transmission.
Fuel Smartsby Jack RobertsMay 26, 2026

Can Multi-Speed EV Transmissions Solve Heavy Trucking’s Biggest Electric-Vehicle Problems?

A startup called Sigma Powertrain believes purpose-built multi-speed gearboxes can boost efficiency, reduce battery size and improve gradeability for heavy-duty battery-electric trucks.

Read More →
Ad Loading...
Red Hendrickson e-axle at ACT Expo booth
Equipmentby News/Media ReleaseMay 22, 2026

Hendrickson Debuts Electraax E-Axle for Medium-Duty Trucks

Developed with Driventic, Hendrickson's new integrated e-axle is designed to improve efficiency, reduce weight, and extend range in Class 6-7 EV applications.

Read More →
Fueling trucks.
Fuel SmartsCover Storyby Deborah LockridgeMay 18, 2026

50 Ways Fleets Can Cut Fuel Costs Now — Without Buying New Trucks

Fuel savings don’t come from one big change. They come from dozens of small ones. Here’s how leading fleets are stacking gains across drivers, routing, maintenance, and more.

Read More →
Collage of HDT Top Green Fleets with logo
Fuel Smartsby Deborah LockridgeMay 18, 2026

Top Green Fleets 2026: How Fleets Are Reducing Emissions in the Real World

What works in sustainable trucking today? Heavy Duty Trucking's Top Green Fleets are finding practical ways to cut fuel use, reduce emissions, and keep freight moving.

Read More →
Ad Loading...
Tesla Semi electric truck on display at ACT Expo
Fuel Smartsby News/Media ReleaseMay 13, 2026

California Launching $1 Billion Electric Truck Rebate Program

CARB says the California Clean Fuel Reward program will begin offering point-of-sale rebates of up to $120,000 for electric commercial trucks starting June 26.

Read More →