Buyers are bidding up prices of used vehicles with fuel-saving diesel engines, industry analysts say. A diesel engine added about $1,000 to the roughly $50,000 sticker price of a new 2005 Mercedes ...

Prices for old diesel trucks are spiking, but the real question is why? Diesel truck fans have long clung to the idea that these rigs "run forever," and theoretically, they're not wrong. As Jalopnik ...

Diesel-powered vehicles, especially older ones, are rarely thought of as being "silent." But for the purposes of the National Radio Astronomy Observatory in rural West Virginia, the old clatter-traps ...

Allen Schaeffer, executive director of the nonprofit Diesel Technology Forum, is a big fan of clean-diesel retrofits for certain older trucks because of the low-cost benefits retrofits can deliver.

Renault chief Carlos Ghosn wants the French government to take measures to replace the most polluting old diesel models in France. “We should perhaps remove the very old diesels that have not evolved ...

The transportation sector is the most significant contributor to greenhouse gas (GHG) emissions and subsequent air pollution in the U.S. According to recent estimations, vehicle emissions are ...