EPA Proposes Changes to Diesel Engine Rules

EPA Proposes Changes to Diesel Engine Rules

(NAFB.com) – The Environmental Protection Agency is proposing changes to diesel engine rules it says could save the trucking industry $12 billion, while lowering transportation costs for farmers and rural businesses. If approved, the proposal would eliminate engine deratements caused by Diesel Exhaust Fluid system failures and revise emissions warranty requirements. EPA estimates the changes could save up to $6,000 on the purchase of a new truck…

EPA proposes end to DEF derates to mixed reception

EPA has proposed ending diesel exhaust fluid-related engine derates, replacing the gradual dialing back of truck performance with visual or audible notifications.

Zeldin Unveils EPA Plan To Save Truckers $12 Billion

By Virginia Grace McKinnon, The Daily Signal | July 10, 2026 American truckers are expected to save $12 billion thanks to the Environmental Protection Agency and Administrator Lee Zeldin rolling back Biden-era regulations and addressing what he called a “nationwide disaster.” The administration plans to address manufacturers’ concerns, consumer pricing, and truckers’ safety by addressing system failures.“Americans depend on reliable trucks to mo…

EPA Proposing Plan to Save Truckers $12 Billion by Revising Biden-Era Rule & Eliminating DEF Deratements

A U.S. Environmental Protection Agency proposal seeks to revise emissions compliance requirements enacted under the previous administration and eliminate DEF-related deratements completely. The public comment period is open now.