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The key, as I see it, to a 1/2T diesel being a good choice will be with aero aids we're finally seeing on the rest of the line. I say this because truck aero and extra weight are a handicap even in pulling aero trailers compared to non-truck alternatives. The lack of independent suspension on trucks makes a Grand Cherokee a better tow vehicle in most all instances. That it also would have higher solo mpg makes the diesel, thus far, the better choice in that vehicle over a pickup truck.
The numbers shown thus far -- the teasers -- show low engine weight and high HP/TQ, but we'd need to see what the constant duty cycle is likely to be. The 6.7L Cummins is used in medium-duty, not just light-duty, trucks. Is the VM Motori just a scaled up car motor?(so to speak). I'd like to hope not.
Defining the load is more important than the vehicle envisioned to move it.
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