Once the E-Class was revealed, though, we got down to business. We started off with the BLUETEC version promised back in Detroit. Tech specs include 221 horsepower and a monster 376 lb.-ft. of toque-along with 35 miles per gallon. Sweet. And clean, according to MB; it’s the “world’s cleanest engine in its class.” We’ve driven the last generation of MB diesels, and were mightily impressed; we’ll be surprised if this one doesn’t surpass even that.