Mercedes-Benz doesn't usually wind up on top in fuel economy — unless the Mercedes you're looking at has a turbodiesel engine. Mercedes officials have been adding their fuel-thrifty, new-generation, 3 ...

With light-duty diesels barely a blip on U.S. sales charts today, it’s hard to believe we will ever embrace oil burners as daily drivers. Still, gasoline prices are near record highs, and new ...