Cummins, which makes diesel engines for trucks, among other products, will pay a record Clean Air Act civil penalty of $1.675 billion in a lawsuit brought by the US Department of Justice, the ...

If America were a saner place, Washington would have more than two political parties, Major League Baseball would never have created the designated hitter, and we’d all be driving cars with clean, ...

They pull hard and use less fuel than a gasoline engine doing the same work. Greater fuel efficiency will often offset the ...

Despite the original diesel fiasco in the 2010s — and the five automakers facing their own Dieselgate trial in the U.K. this year — diesel engines have definite benefits over their gasoline-powered ...