Havent they learned yet that a bigger V6 diesel will outperform any 4 cylinder in every measure? Let me tell you about a Van I’ve driven, the 2014 Mercedes Viano 3.0 CDI Lang, a 2.2 ton, 224hp, RWD mid-size van with a sub-9s 0-60 time and a 130mph top speed. Driven normally on a highway biased route it’ll average…