Every diesel-head knows about Cummins engines — specifically, the six-cylinder Cummins 5.9-liter and 6.7-liter engines. But given how popular these engines are, we won't blame you if you didn't know ...

The diesel engine may have fallen out of favor, but some manufacturers aren't letting go of it. We're about to see some impressive new diesels in 2027.

Cummins is revising its rollout of Model Year 2027 on-highway diesel engines following the Environmental Protection Agency's proposal to ease some of the implementation requirements for its 2027 ...