Before Dieselgate happened, and the diesel card-house came tumbling down, we had this 800-mile-per-tank master of efficiency.

Purdue University’s Greg Shaver doesn’t believe there should be a trade-off between protecting the air we breathe and achieving better engine efficiency of large vehicles on the road. Shaver, a ...

Scientists are exploring a surprisingly simple way to clean up diesel engines: adding tiny droplets of water to the fuel. During combustion, the water rapidly vaporizes, triggering micro-explosions ...

Diesel engines have carried the bulk of North America’s freight my entire life. Estimates in 2020 were that diesel trucks carried more than 65% of freight by weight and exceeded 72% by value according ...

Smaller, more powerful and fuel-efficient engines don’t seem to have great long term reliability. Engine recalls from major automakers such as GM, Toyota and Honda have cost billions of dollars. Moves ...

EcoBoost 3.5-liter gasoline V-6 and a naturally aspirated 3.7 V-6 in Ford's upcoming Transit vans will do the work of much larger and heavier V-8 and V-10 engines in current E-series vans. New ...