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New 6.2 first trip mileage report

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Old 06-21-2011, 07:15 PM
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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.
Old 06-21-2011, 09:19 PM
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Originally Posted by 01WS6/tamu
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.
Old 06-22-2011, 06:32 AM
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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.

Last edited by 91Z28; 06-22-2011 at 06:56 AM.
Old 06-23-2011, 03:48 PM
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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
Old 06-23-2011, 06:11 PM
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Originally Posted by redneck08sierra
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.
Old 06-23-2011, 08:11 PM
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ccsb 4x4 6.2 342 and best is about 19 and worst is about 11 usually around 15-16
Old 06-27-2011, 10:56 PM
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pulled a peak of 18.5 on e85 in mine over the weekend coming back from chicago to kansas city.
Old 06-28-2011, 10:57 AM
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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.
Old 06-28-2011, 11:08 AM
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Originally Posted by redneck08sierra
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
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
Old 06-28-2011, 01:04 PM
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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.


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