Eco-Diesel? It's not a Cummins. I think they're manufactured by Fiat. My Dad has one (2015?), and he seems to like it. It gets high 20's MPG on the highway. and will go 600+ miles on a tank of fuel. I've driven it enough. My biggest complaint is that it has an annoying hesitation taking off from a complete stop. Other than that, if you mash on the gas, it'll get on outta here (impressively). The ecodiesel is a nice truck. If I were in the market for a new truck, I'd probably opt for the Hemi. The Hemi has roughly the same torque and towing capacity, but you'll give up some MPGs even with the MDS. If you're seriously in the market though, go ahead and test drive one of those ecodiesels. It might just be your thing!