Mine has notch under 10K on it and I'm averaging 18.5 to 20 on straight highway 70-75 with the cruise set. After I dropped it and put a tonneau on it I gained about 1 MPG. Mine is a 6.2 4wd short crew with 3:73's.

 

There is hope after all! I will have to calculate mine, I am still in the I don't care for the fun and the power phase. I will wise up soon and get to you guys with a calculation.

 

I got mine on the highway for an extended period of time for the first time last weekend. At 75mph, I was getting just under 16mpg and at 65mph right at 18. This was with 5 people in the truck and about 300lbs of stuff in the bed. My best average for a week of driving back and forth from work (all roads, 45-55mph with stop signs) is 16.4.

 

i swear there was a thread on here where guys were saying they were getting 20+ mpg from there 6.2 and this was going 75ish (which I thought was odd and awesome mileage). they said 75 was a sweet spot and anythign below you would get worse mileage. Maybe I read the thread wrong b/c in this thread sounds like many are averaging 16-18

 

Gears. Gears. Gears.

 

ccsb 4x4 6.2 342 and best is about 19 and worst is about 11 usually around 15-16

 

pulled a peak of 18.5 on e85 in mine over the weekend coming back from chicago to kansas city.

 

My tires kill my mpgs, but I pulled a best mpg of 15.5 on the highway after my tune yesterday. Before my best full-trip average was 14.5. Both times I maintained about 78-80mph. We'll see what happens after my tonneau goes on. I know if I slow down I'll do better, but I've been in a hurry.

 

I was getting 20+mpg when i had my stock 20's and would cruise up 45N without traffic. Since i put on 22's i haven't seen anything higher than 19mpg

 

Yeah, I'm sure that going up from the stock 265/70's to the 285/70's is hurting my mileage a little bit, but I like the trade-off. Goodrich Rugged Terrain T/A on stock 17" alloys.