The EPA is escalating its response to consumer complaints regarding DEF system failures, announcing a new investigation aimed ...

EPA demands DEF failure data from diesel makers. Investigation could force recalls and software fixes for engines already on U.S. roads. 30-day deadline set.

The EPA questions if diesel DEF de-rates are essential for emissions compliance. Could changes be on the horizon? Discover ...

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

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

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

The Environmental Protection Agency is requiring 14 major diesel engine manufacturers to provide detailed information about ...

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 U.S. Environmental Protection Agency, working hand in hand with the U.S. Small Business Administration, is providing relief for any farmer whose tractor has suddenly shut down mid-field, or ...

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

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