Check owner's manual. If you don't have one copy and paste link below; www.fleet.ford.com/maintenance/owners_manuals
I just bought a used 2002 Ford E 150 conversion van and it said it had a 35 gallon tank Average 14 mpg city, and 19 mpg highway
The average gas mileage for a 2006 Ford F-150 depends on the model and type of engine it uses. City mileage ranges from 9-14 mpg, while highway mileage ranges from 12-19 mpg.
I get about 19 MPG average in my '95 Wrangler 4-cyl. My bro had a '93 with the 6-cyl and it got about the same.
A 2014 Ford F-150 SVT Raptor gets 11 City and 16 Highway MPG.
The EPA mileage estimate for the 2012 Ford F-150 is 17 mpg in the city, 23 mpg on the highway.
The EPA mileage estimate for the 2004 Ford F-150 is 14 mpg in the city, 18 mpg on the highway.
The EPA mileage estimate for the 2003 Ford F-150 is 15 mpg in the city, 19 mpg on the highway.
The EPA mileage estimate for the 2013 Ford F-150 is 17 mpg in the city, 23 mpg on the highway.
The EPA mileage estimate for the 2009 Ford F-150 is 14 mpg in the city, 19 mpg on the highway.
The EPA mileage estimate for the 2010 Ford F-150 is 15 mpg in the city, 19 mpg on the highway.
The EPA mileage estimate for the 2005 Ford F-150 is 13 mpg in the city, 19 mpg on the highway.
The EPA mileage estimate for the 2011 Ford F-150 is 17 mpg in the city, 23 mpg on the highway.