JD Supra

EPA Proposes to Delay Tier 4 Light- and Medium-Duty Vehicle Emissions Standards by Two Model Years

What Happened: The U.S. Environmental Protection Agency (EPA) recently proposed to delay Biden-era Tier 4 emissions standards for light- and medium-duty vehicles by two years, extending Tier 3 ...
Transport Topics

EPA Seeks Delay on Stricter Emissions Rules for Certain Vehicles

EPA has proposed delaying stricter emissions standards for light-duty and Class 3 medium-duty vehicles until model year 2029. The standards would cut nonmethane organic gases plus NOx limits by 50% ...
Autoblog

EPA Gives Gas Cars More Time Before Tougher Emissions Rules Hit

The agency says it wants consumers to choose the cars they want, rather than forcing EVs onto them. EPA proposes delaying Tier 4 emissions standards for vehicles until model year 2029. The move aims ...
GM Authority

EPA Proposing To Delay Tier 4 Emissions Standards By Two Years, Then Review It

The EPA has proposed delaying emission standard compliance deadlines for light- and medium-duty vehicles by two years, moving the start of Tier 4 requirements from the 2027 model year to the 2029 ...