After Caterpillar stopped building on-highway engines in 2009, the main fight is between Detroit and Cummins when it comes to the best commercial diesel engines on the market currently.

Since launching in 1992 as a replacement for the 6.2 diesel V8, the 6.5-liter GM Detroit diesel engine has had good years and ...

When it comes to diesel engines, Cummins is one of the most recognizable names. But are semi trucks still using them? Here's ...

I've never been a fan of the Detroit Diesel 6.2L engine that was so popular in GM trucks from the 1980s, probably because the GMC C1500 that my dad had as a shop truck was about the slowest ...

Ford's penchant for power is well known. Here are 10 of the most torque-laden engines to ever come from the Detroit-based ...

Like many other auto manufacturers, Mercedes-Benz had trouble selling diesels in the U.S., eventually discontinuing them here ...

EPA announces $3.2M funding for Southwest Detroit project to reduce diesel emissions and promote cleaner technologies.

Since it debuted in 2007, Freightliner has produced more than one million Cascadias. With the fifth generation Cascadia going ...

The varying RPM turns of two-stroke Detroit diesel engines are student Austin Brown’s favorite. With a bit of coaxing, Brown ...

In the 2025 medium-duty truck market, manufacturers focus on power, efficiency, safety, and driver comfort. Here's a look at ...

Ford is using the 2008 Detroit Auto Show to kick off the transition ... Compared with more expensive hybrids and diesel engines, EcoBoost builds upon today's affordable gasoline engine and ...

Diesel engines don’t have spark plugs; instead, they use the super-heated air created by their high compression ratios to ignite the diesel fuel as it’s injected into the cylinder.