Ryster, do you have Imperial Gallons up North? Is your fuel display MPG in US Gallons?

I have a 2012 4.7L which your engine/tran replaced in 2013. My worse tank has been 17.2 mpg combined. In rolling hills, I get 21.5 mpg at 65 mph. I've seen some really flat highway sections where I'm recording 25 but, like you said, do any stop and goes with this heavy vehicle and the gas mileage drops noticeable.

 

No we have metric system here, liters per kilometers, So your 2013 4.7 is getting pretty much the same fuel economy as this eight speed is, I'm sure I could get better numbers if I tried to drive a bit less aggressively, but old habits are hard to break. The fuel economy may get better after a few oil changes, it only has 6000 kilometers on the odometer.

regards
Rhys