Rewind the clock about 20 years and besides looking at some bad clothes and the pinnacle of rock ’n’ roll hair bands, you’d see diesel-powered cars accounting for 80 percent of all Mercedes-Benzes ...

Fans of diesel automobiles generally fall into one of two categories: the pragmatists, who admire such cars for their efficiency, durability, and grunt; and the iconoclasts, who get off on the oil ...