The diesel engine was invented in the 1890s and has been in use in commercial vehicles and passenger cars for over a century. Diesel engines remain popular for their reliability and fuel economy, ...

The fuel and exhaust systems inside diesel engines work closely together. As a result, fuel- and exhaust-related issues can be some of the most difficult to diagnose: A symptom in one system often can ...

Older diesel trucks sit at the center of a policy fight that touches public health, climate goals, and the economics of freight. Regulators see high-emitting engines as a lingering liability from an ...

A motorist fills up the tank of a vehicle at a gasoline station in Littleton. (AP Photo/David Zalubowski, File) How a vehicle built to run on unleaded fuel reacts when diesel is introduced to the mix ...

NEW YORK (AP) — When long-haul trucker Deb LaBree sets out on the road to deliver pharmaceuticals, she has strategies to hold down costs. She avoids the West Coast and the Northeast, where diesel ...

Volkswagen Group has admitted that former chairman Martin Winterkorn received two memos about the diesel scandal in 2014. Top execs ignored the problem because they didn't think it was a serious issue ...

Ten months after launching a new diesel engine for heavy-duty pickup trucks, Ford faces a chorus of quality complaints from owners who are among the company's most loyal customers, Reuters reported.

Diesel engines have a steadfast reputation for reliability, longevity, and pumping out gobs of grin-inducing, low-end torque. The latter makes diesels preferable over gas engines for hauling, towing, ...

The national average price of a gallon of diesel passed the $3 mark for the week ending Monday, Aug. 7, and that was before BP’s announcement of a shutdown in the nation’s largest oilfield. Meanwhile, ...

As a result, fuel and exhaust-related issues can be some of the most difficult to diagnose: A symptom in one system can often arise from a problem in the other. Here are three common fuel and exhaust ...