Normal-sized diesel-powered cars capture a significant foothold in a huge market outside the U.S., here’s why.

Any certified gearhead knows that diesel engines do not use spark plugs. But why not? If power in an engine is created by combustion or explosion of flammable liquids, won't a spark plug in a diesel ...

Three-cylinder diesel engines have not disappeared from the market, but they now occupy a narrower, more specialized corner of the powertrain world than they did a decade ago. They continue to be ...