Gas Mileage - 2 week experience

[Macs79]

I have been experimenting with different fuels at each fill up. I wanted to see which fuel offered the best fuel economy with offering the best experience. I used the Jeeps MPG meter and reset it at every fill up and stuck to the same driving routine.

Hopefully someone can find this info useful.

2018 Jeep Sport S
2 Door
2.0 with automatic
Stock everything and brand new

17.6mpg - Dealership fuel (unknown) and still getting to know the Jeep.

21.7mpg - 87 octane Valero 10% Ethanol. Sluggish driving experience.

22.1mpg - 89 octane Valero with 10% ethanol. Much better driving experience.

24.3mpg - 92 octane Buc-ee’s and ethanol free. The Jeep ran its best out of all the fuels. I think it may have done better mpg wise, but i got on it a bit. Most expensive of all the fuels.

25.1mpg - 93 octane Shell with 10% ethanol. Ran well, almost as good as the Buc-ee’s gas and cheaper.

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[Sippican]

2018 JLU
6 Cyl
19-21.5 MPG
regular gas

 

[SecondTJ]

I used the Jeeps MPG meter and reset it at every fill up

Try hand calculation next time for a more accurate mpg number. The dash meter is known to be a little too generous

 

[cosine]

2019 jl sport 2 door. 3.6 auto. oct 87. getting 18.1 average mpg with ess. 17.? without ess. oct 87 is 2.61 by me. i'm not looking to spent up to 3.19 for oct 93. its not worth it for me even tho the mpg could increase.

 

[rallydefault]

Also, if your picture is anything to go by, doors off/roof off mpg is gonna be WAY different, at least in my experience. The moment I take my soft top down my mpg plummets if I'm gonna be doing any highway driving whatsoever.

 

[jameslavis]

I’ve run 3k thorough it. 2.0, 4 door unlimited 2019. 24mpg combined basically every week.

 

[liquids]

Engines are "tight" to begin with and loosen up as miles are added. That's partly why the dealership number is so low. Repeat your experiment after a year.

 

[Macs79]

Also, if your picture is anything to go by, doors off/roof off mpg is gonna be WAY different, at least in my experience. The moment I take my soft top down my mpg plummets if I'm gonna be doing any highway driving whatsoever.

That was the first time for everything being off. Finally had a free weekend to do it.

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