Got my truck in December, roughly 1,250 miles on it, average 13.4mpg, mixed 50/50 hwy/city. I suspect the real world mpg is lower by at least 1 to 2 mpgs. I would do a hand calculation but I dont care about it that much, cause it won’t change anything. I have the 33ga tank and I can see the fuel gauge needle moving everytime I look at it, the HEMI is very thirsty, all the time.....
My salesman, which is also a friend, when I asked him about the ecodiesel , he almost threw me out of the dealership and added that nobody gets the diesels. So I stuck with the Hemi, maybe that wasnt the best decision in retrospect.