I filled up yesterday at $3.49 per gallon and I had to shop for that, the aveage was $3.59. I have one of those F 250, super dutys with a 6.8L V10. I average around 9 or 10 miles per gallon. Sometimes I even make it to 11+. Since I'm retired it stays parked in the driveway more these days. We use it to haul a camper.