Diesel aircraft engines promise lower fuel burn and cheaper operating costs at a time when every gallon and every kilogram matter in the air. Yet as manufacturers push these powerplants into more ...

For a long time in the U.S. car market, bigger was better. From engines to bodywork, size meant luxury and performance. But recently, manufacturers and customers alike have got used to a new concept: ...

Imagine you’re driving along and coming up behind you, you spy the large chrome kidney grilles of a fancy looking BMW X5. With glistening paint it looks like it just rolled off the assembly line ...