The Trump administration is demanding warranty and failure data from top manufacturers in an effort to end truck engine ...

Truckers blame DEF for shutdowns and big repair bills. Now, the EPA wants data from manufacturers that could reshape DEF ...

Under the new measure, the EPA is requiring detailed warranty, failure rate and repair data from major diesel engine ...

The federal agency is demanding failure and repair data from manufacturers to "hold [them] accountable for the continued ...

EPA asked manufacturers for info in hopes to "PERMANENTLY eliminate the deratements ENTIRELY," agency boss Lee Zeldin said.

Breaking news, the EPA is forcing engine makers to reveal the truth behind their DEF systems for repairs, warranty claims to ...

The EPA is considering eliminating the "limp mode" rule for diesel engines, a feature that drastically slows trucks and ...

Removing an emissions device, while no longer a criminal matter, still represents risk for haulers. One responded to EPA and ...

Following Monday’s right-to-repair announcement, EPA is demanding DEF failure data from engine makers, targeting shutdowns ...

The U.S. Environmental Protection Agency is ramping up its pressure on engine makers to fix persistent persistent diesel exhaust fluid (DEF) system failures that have disrupted farming, trucking, and ...

The Environmental Protection Agency is asking diesel engine makers to provide information about diesel exhaust fluid system failures as it considers changes to emissions regulations.

Under today's guidance, EPA says farmers can temporarily override emissions systems to make repairs, as long as the equipment ...