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all depends on the driving habits, seeing the winter blend is out the mileage should go down a few per gallon, my 05 4.7 gets an average of 20/22 mpg on the highway with the cruise set at 65, and 17 or so around town
Search for "gas mileage". This subject has been beat to death. I have seen guys reporting anywhere from 11 to 25 MPG. A lot of factors influence mileage. Another reason why you dont see the 4.7 anymore. They were not built for mileage.
Here is what get, with the superchips tunes installed:
2010 4.7 4x2: 14mpg city and about 18mpg highway @75mph
The 2008+ 4.7L V8s were a bit better on mileage than the pre-2008s, or so the general rule of thumb goes. More power too.
About the same here, but got a 4x4. I will see 14-15 in town during the winter if I don't use 4x4, 15-16 in town during the summer. Part of the reason for less during the winter is winter blend gas and I throw about 300 lbs of sandbags in the back.
On the highway, driving 75 or 80, get about 18. Driving 55 or 60, I can get over 20. I got 22.7 MPG driving back from a wedding in Nebraska, where state highways and even parts of the interstate range from 55-60 MPH typically.
All depends on how you drive, where you drive, and what tires you use.