 I have just purchased this vehicle. Performance is excellent and ride is great. I know that people are concerned about the fuel economy. This truck is a job build #3. I would have to tell anyone that is looking for reasonable fuel economy and need a truck, this Ford will do the job. I have the diesel with the 3.55 rear end. I only have 1000 miles of use but I was able to get 19.3 MPG driving 60 MPH. Remember the diesel will show a MPG improvement after about 10K. The Super Duty will make a excellent truck for anyone needing a truck for work. I also believe those getting bad MPG are running 4.10 gears and also drive just to fast to maximize MPG. 