It May Be Diesel's Turn to Shine As Americans Yawn at Hybrids

So far, Volkswagen — both with its VW and Audi brands — BMW and Mercedes-Benz have provided all of the impetus behind the nascent clean-diesel trend in the U.S. market, with increasingly popular diesel-powered versions of the Volkswagen Passat, Jetta and Golf, Audi A3 and Q7, BMW x5, and Mercedes-Benz M-Class and R-Class. And the German marques, especially VW and Audi, keep doubling down on the diesel franchise.