Poor mpg

Clint623 · June 14, 2017

I'm wondering why I'm get really poor mpg. All I have is a lvl kit with all terrains and a k&n air flow. On average I'm getting about 15 with no trailer and feathering the gas pedal to keep in v4... I'm not sticking my foot in the floor board all the time to hear the k&n roar[emoji848]. I see a lot of you guys getting 16-19 with pretty much the same setup. I think I was getting better mpg without the k&n.

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Edited June 14, 2017 by Clint623

Justin101714 · June 14, 2017

What kind of gasoline are you burning? Octane? Brand? Even if you don't have your foot to it, just driving at a high rate of speed drinks gas.

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Edited June 14, 2017 by Justin101714

TomN · June 14, 2017

I average about 15 as well but dip down to 14mpg with all city driving. I'm not sure how others get higher mpgs.

My average weekly commute is about 40 miles per day with 10 miles on the highway.

I always do my gas mileage out on a calculator after filling up because I found the trucks estimation is always high

Also worth noting, my truck is bone stock except for running 22 inch oem wheels

Edited June 14, 2017 by TomN

Clint623 · June 14, 2017

What kind of gasoline are you burning? Octane? Brand? Even if you don't have your foot to it, just driving at a high rate of speed drinks gas.

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Just regular gas and sonoco 9/10 times

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Justin101714 · June 14, 2017

Just regular gas and sonoco 9/10 times

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There's just lots of variables as to why poor mpg happens. I drive about 30 miles to work one way every day and my average is around 18-20. Just kind of depends on so many things it would be next to impossible to give you a true reason. I do know that all vehicles are tested on 100% pure gasoline and not an ethanol mix when the mpg ratings are developed for the vehicles during manufacture. So the sticker on the window will almost never be what you get.

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O_J_Simpson · June 14, 2017

As you have discovered, the lvl kit and AT tires can really kill MPG.

Donstar · June 14, 2017

Considering your changes your mpg isn't "really poor".

aseibel · June 14, 2017

what speed are you driving to get your 15mpg? driving around town, that's pretty normal.

freeways can be deceiving too, because if you are driving 75+ on wide open freeways you will get way worse mileage than someone who drives 60 on rural country 2 lane roads.

The others have already discussed how your level kit and tires probably did lower your fuel efficiency a bit. But keep in mind your tire pressure can also affect it. Driving with too soft of tires creates a lot more rolling resistance. I would check the recommended tire pressure from the manufacturer. (recommended, not the max that is listed on the sidewall) Your truck sensors may think you are good at 35 psi, but the tires may actually want 45 psi in them. A lot of people don't think about this when putting on aftermarket rubber.

Knotsure · June 14, 2017

I drive 40 miles one way to work in central texas, the hill country. If I use cruise every chance I get at 2-4 miles over the speed limit I am around 16+ mpg. That is with stop lights and hills and a little highway driving. When on the open highway I can get 18-20+ if I don't drive to fast.

These guys getting 20,22,24+ mpg must be cruising mostly at 40-60 mph on flat roads. Or 60-70 on good flat highway with NO lights.

2014 Silverado Z71

Edited June 14, 2017 by Knotsure

Sierra706 · June 14, 2017

Currently I average around 10-11 on my daily commute to work. I have about a mile with two traffic lights. The engine never reaches operating temp and the mileage reflects that. But even so it's been three weeks since I filled my tank and I've got plenty left [emoji16]

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OldBlue61 · June 14, 2017

I have an 84 mile round trip every day for work. 90% of that is on 55mph county roads and 65mph highways with 3 traffic lights (and a couple of railroad crossings) the whole way. I average 21.6 (done by hand the last time, not the DIC). I pretty much stick to the speed limit, and watch how much I dip into the throttle. I can make my mpg drop quickly if I really want, but if I'm careful, I really do get pretty good mileage.

Edited June 14, 2017 by OldBlue61

njk4o5 · June 14, 2017

mine got 15 city/17-18 highway when it was 100% stock.

its funny they have all this fuel saving technology on these shitboxes but they still get horrible mpg

dasimmon · June 14, 2017

There's just lots of variables as to why poor mpg happens. I drive about 30 miles to work one way every day and my average is around 18-20. Just kind of depends on so many things it would be next to impossible to give you a true reason. I do know that all vehicles are tested on 100% pure gasoline and not an ethanol mix when the mpg ratings are developed for the vehicles during manufacture. So the sticker on the window will almost never be what you get.

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i did not know that...good info thanks

dorkweed · June 14, 2017

I drive 40 miles one way to work in central texas, the hill country. If I use cruise every chance I get at 2-4 miles over the speed limit I am around 16+ mpg. That is with stop lights and hills and a little highway driving. When on the open highway I can get 18-20+ if I don't drive to fast.

These guys getting 20,22,24+ mpg must be cruising mostly at 40-60 mph on flat roads. Or 60-70 on good flat highway with NO lights.

2014 Silverado Z71

Let's not forget the few asshats here that claim 25+mpg running 80mph; and the one that claims almost 30mpg.

amxguy1970 · June 14, 2017

What size level and what tires/size? I am guessing you went with the infamous KO2's that are one of the most aggressive and heavy AT's (mostly come in E load range) as well as I am guessing a 2-2.5 level? That combined with 4wd did it. Next time maybe lighter tires and a 2wd truck will fix your complaints?

Tyler