Gas mileage not what was expected

[Reinen]

I am looking into getting a 2.0 2 door Rubi. I wonder what kind of mileage that would get....I drive like an old man. Mileage is not the most important thing with a Jeep, but it sure is nice to have some decent numbers.

Driving like an old man has it's benefits. I have a 2.0 2dr Rubi and I'm averaging around 19 MPG. But I'm up at 1-2 miles elevation. You'll do much better way down where you are. Also CC/ACC is your friend for maximizing MPG. It's that heavy foot that really brings it down.

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[Jamrock]

Hold up!!!

Are you guys sure that Sports get better mileage than Rubicons?

I don't know. I am just asking.

 

[Reinen]

Hold up!!!

Are you guys sure that Sports get better mileage than Rubicons?

I don't know. I am just asking.

I'd be surprised if they don't, given the different gear ratios and greater weight of the Rubicon.

 

[cs2k]

Hold up!!!

Are you guys sure that Sports get better mileage than Rubicons?

I don't know. I am just asking.

The Rubicon gets worse MPG because
- It sits approximately 2 inches higher than the sport, larger frontal surface area means more drag
- AT tires are more draggy on the highway than all-season tires which comes on the sport
- 33 inch tires are heavier than thee smaller tires on the sport, rotational mass makes a larger difference on efficiency.
- Dana 44 front axles have larger/draggy-er internal components
- Beefier axles, skid-plates, side-rails adds weight to the jeep, which lowers MPG
- Different axle ratio means the sport has taller gears (this is somewhat counteracted by the bigger tires of the rubicon)

 

[shelglass]

 

[shelglass]

2020 JL 2 Door Sport, Premium Gas 91< only, yes I drive like an old guy

 

[Petey]

That being said, I also saw an indicated 30MPG on the highway from Denver to Co Springs and back so even with correction factor I'd say I got 27-28MPG in reality.
[/QUOTE]
Same here with mine but , off by 2 mpg.... On a straight road I max out the mpg reader gauge too...I know for sure I don't make anywhere near the 30's.

 

[Petey]

Hold up!!!

Are you guys sure that Sports get better mileage than Rubicons?

I don't know. I am just asking.

It would make sense and it would seem so even on paper

 

[CptFloridaMan]

My DD is a ‘20 Sahara 2.0 T on 35s.
3.45 gears.

Running 89 oct gas which 95%+ of the time comes from a shell station.

Setting between 33-35k miles.

A good piece of my driving is on State Highways where 50 - 55 is often top speed. Probably 1/4 - 1/3 of my total Milage is interstate travel 70 - 75 MPH.

Over the Memorial Day weekend, average for total milage (since new) I reached 27.5 mpg.

I typically set around 23 and 25 using spring - summer - fall mix. Winter mix I drop to around 18 -20.

Just threw 35s on my sport with stock gearing. You’re getting what i’m wanting to get for mileage. Of course depends on how I drive. I’ll update in a week when I fill up again.

 

[Mtpockets]

‘21 Rubicon V-6
87 octane
20.4mpg
35-45mph in-town driving
bone stock

 

[DieselTrooper]

Was getting this on my stock 2020 JLU Diesel. This was a 150 mile highway only trip with cruise set at 55mph. Not sure what it is now with the lift/wheels/tires/bumper/winch. Haven’t corrected the Speedo yet.

 

[Mall Crawler Steve]

21 JL WILLYS, V6, AUTO 14 MPG on 87 @ $3.259
540i BMW 4.4 V8 AUTO 12 MPG on 93 @ $3.799
Don't really care about 14 but I thought it would be better.
Does anybody think you get better mpg on higher octane fuel?

 

[Petey]

21 JL WILLYS, V6, AUTO 14 MPG on 87 @ $3.259
540i BMW 4.4 V8 AUTO 12 MPG on 93 @ $3.799
Don't really care about 14 but I thought it would be better.
Does anybody think you get better mpg on higher octane fuel?

in a short answer nope....u might actually get less ... unless... u ping like crazy then it probably would get better mpg

 

[Down South]

The computer on my 2020 2.0 JRLR always shows higher mileage than hand calculated.
So far out of the last 4 tanks of fuel, all hand calculated and averaged together I'm getting 22.6 mpg with 87 octane.
I drive a few mph over the posted speed limit on the highway.
My mileage is combined driving and I don't have a heavy foot.

I will continue to calculate about 8-10 tanks averaged together to have a more accurate average.

If I continue getting around 22+ mpg, I will be happy.

 

[SeanPDX]

That seems right. In stock form, my 2.0 Sport was getting 26-28mpg and I had a few trips where I had an average of 30+. That all disappeared when I got a lift, slightly larger tires (33”), heavy steel bumpers and winch, 4.56 gears and a roof rack and awning Even with all that and about 800lbs of gear including an RTT I can still manage 20-22mpg IF I keep the Speedo at 60 or under. BIG drop as you go north of 65.

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