For decades, light-duty diesel engines in the U.S. market have been treated like the “red-headed stepchild” of the powertrain family. They’ve been saddled with generally more expensive fuel, costly equipment to scrub emissions, high regulatory hurdles, and an outdated reputation for being smoky and loud. CBT’s Joe Gumm sat down with Tom Murphy, Senior Editor at WardsAuto, to discuss if the Volkswagen scandal affected the way automakers view diesel engines and if this impacted sales.