Filling up on diesel is a sizable investment anywhere, but its price compared to gasoline can vary widely depending on where in the world you buy it.

Diesel prices have dropped to $3.534 and gasoline to $3.141, showing a downward trend. The Gulf Coast experienced the largest declines, with diesel at $3.195 and gas at $2.684, while the West Coast ...

It’s cheaper to drive a diesel-powered vehicle than a gas-powered vehicle over the course of three to five years, according to a new study commissioned by Robert Bosch LLC – a company that makes ...