I get between 220 to 240 miles to a tank in the city with my 4.6L V8.
About 12 to 15 MPG.
I usually get a little less in the winter because I let the car warm-up in the mornings before driving it.
my 95 v8 used to get about 24 city and 27 hwy. and in the winter it is going to pull more gas because the car uses more juice when the heater is on then when the ac is on hope this helps at all.