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MPG - 3.7 V6 vs 5.0 V8

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Old 04-19-2015, 05:51 PM
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Originally Posted by 5.0GN tow
My 5.0 has been solid. It's a 4x4 supercab and highway gets about 18 at 75 mph plus. If I slow down a bit it gets closer to 19-20. Around town and highway combined it's about 16.8.
This has been my experience as well with the 5.0. Though my truck only has about 1200 miles on it so it's not really broken in yet.
Old 04-19-2015, 05:52 PM
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I'll just leave this here....





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Old 04-19-2015, 06:21 PM
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My boss has a 2013 4wd supercab with the 3.7 he bought new. It's a nice looking truck, Kodiak Brown metallic. He's got it up for sale. He swears he gets 15 mpg. Admittedly, he's not going to get good mileage in anything, he drives 80 plus on the interstate. But the fact that the V6 is capable of getting that low mileage (I saw 15.2 on the dash readout) and the fact that he's having a heck of a time selling it, I'd personally pass on the NA V6. That's just me, though. I'd rather have the V8 or the turbo engine. If I didn't trust the reliability of those, I think I'd choose another brand.

I do agree the 5.0 is prone to knocking. My 2013 did, traded it for my wife a new Toyota. So I'm on the fence on what I'll buy next. If I'm spending a fair amount of money, I'm personally not interested in the NA V6. Lower resale, and I don't think the fuel mileage is earth shattering.
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Old 04-19-2015, 08:30 PM
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My 6.2 XLT gets about 14 highway, 12 town...... Not great but with the Roush pipes it makes it all worth it.
Old 04-21-2015, 01:33 AM
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36k miles on my 5.0 with no problems. I stomp the throttle almost everywhere I go. Most of my driving is in the city and I always average 15.8-16 MPG.
Old 04-21-2015, 11:48 AM
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Originally Posted by News in
My boss has a 2013 4wd supercab with the 3.7 he bought new. It's a nice looking truck, Kodiak Brown metallic. He's got it up for sale. He swears he gets 15 mpg. Admittedly, he's not going to get good mileage in anything, he drives 80 plus on the interstate. But the fact that the V6 is capable of getting that low mileage (I saw 15.2 on the dash readout) and the fact that he's having a heck of a time selling it, I'd personally pass on the NA V6. That's just me, though. I'd rather have the V8 or the turbo engine. If I didn't trust the reliability of those, I think I'd choose another brand.

I do agree the 5.0 is prone to knocking. My 2013 did, traded it for my wife a new Toyota. So I'm on the fence on what I'll buy next. If I'm spending a fair amount of money, I'm personally not interested in the NA V6. Lower resale, and I don't think the fuel mileage is earth shattering.
Well, he sold the truck for $3k less than he gave for it, with 36k miles on it. So maybe scratch that resale comment lol.
Old 04-27-2015, 09:35 PM
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I get a combined of around 17mpg, Doing 70-75 on the highway, I'll get 20-24mpg. towing a 5000# camper, 10-12mpg.
Old 04-28-2015, 08:46 PM
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I have a 3.7, it's a great engine. The mileage will be about 10% better all else being equal. We have a 5.0 that I have used from work, and as much as the EPA is a little bit out to lunch, they are usually pretty accurate for comparison for similar configurations.
Old 05-09-2015, 06:50 AM
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Overall, I average 22 MPG(US) with my 2014 STX Scab 5.0 2 wheel drive, driving it easy (no jack rabbit starts, 65 mph on the freeway etc)

Pulling a 8.5 x 16 trailer, I get 12 MPG(US) on average.



Old 05-09-2015, 09:24 AM
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This is my last (mostly) hwy trip. This driving was done in the high desert, so 5500 ft. or so. About 350 of it was ~75mph, beginning at 5500 ft, over the Continental Divide at ~8000 ft or so, then back over the same route. Maybe 10% city driving. My hand calculation matched the computer almost exactly.


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