EPA Removes DEF Sensor Requirement in Move to Save Truckers and Farmers 'Countless Hours of Lost Time'

New EPA Diesel Engine changes aim to reduce truck, farm equipment breakdowns

The Trump administration has updated diesel engine rules to prevent trucks and farm equipment from slowing down or shutting off due to faulty emissions systems, potentially saving Americans over $13 billion a year.

EPA removes DEF sensor requirement in move to save truckers and farmers 'countless hours of lost time'

The U.S. Environmental Protection Agency (EPA) announced a major move intended to save farmers, truckers, and other diesel equipment operators “billions of dollars in repairs and lost productivity.” On March 27, 2026, the EPA announced new guidance to remove the Diesel Exhaust Fluid (DEF) sensor requirement for all diesel equipment in an action that officials say will save Americans “countless hours of lost time and productivity.” The guidance w…

Diesel Truck Liberation Act Seeks to Curb EPA Power

The Diesel Truck Liberation Act seeks to remove EPA authority over diesel exhaust fluid (DEF) and emissions equipment, reducing repair costs for American truckers.