2006 Ford F-150 XLT 4dr SuperCrew 4WD Styleside 6.5 ft. LB (5.4L 8cyl 4A)
Super reliable vehicle!
I am on my 2nd set of tires (Goodyear Silent Armors) whcih may have caused my mileage to drop a bit.
I use to average 17.2 MPG mixed.
Now it has dropped to about 16.8.
I love the quiet steel Ford incorporated into the vehicle.
Keeps the road noise to a very minimum!
I also love the roominess.
I wishi t had more interior storage though.
Very quiet ride!
I will almost bet that you went to a larger tire size.
I made the same mistake, It cost me in overall mpg.
I will be replacing tires today.
I have ordered Michelin LTX M/S2 in the factory equipped size.
I expect the mileage to return to normal.
Keep up on the maintenance and follow factory recommendations.
My 06 has 123,000 miles.
The only failure has been a front hub bearing.
Other than that the truck is the best Ford that I have owned.
My other toy is a Kawasaki ZX-12R that is capable of over 220 MPH.
Keeping the shinny side up.