The U.S. Environmental Protection Agency on Friday announced a new in-use testing program for diesel truck and bus emissions. Prior to this program, an engine had to be removed from the truck for ...

Diesel fuel still has a large role to play in achieving greater emissions reductions in heavy-duty trucks, experts said during a recent conference in San Francisco. Separately, they urged more in-use ...

As GM Authority reported back in September 2021, a lawsuit had been filed against General Motors over the suspicion of an emissions defeat device in diesel-powered Chevy Cruze units. Now, after eight ...