Gas Mileage?

[GI Grandpa]

Brand new here...just picked up my new-to-me 2022 Gladiator High Altitude today...

Question on gas mileage: What do people expect to get? Going 75mph on the highway, without significant wind, flat ground near sea level, with A/C on, I showed average 14 MPG over 300 miles. I was expecting closer to 20. The sticker says to expect 22 highway.... Is that what others see? 15K miles on the truck

Thanks in advance...looking forward to getting immersed in the Jeep culture...

My '21 Mojave is happiest at 55-65 where I can see 18 - 19mpg, if I try to run 75 I'm lucky to see 15mpg. Pretty sure the EPA Mileage test is done on level ground at 55mph in a bone stock Gladiator Sport

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[jmr]

My stock 24 JT Rubicon is getting 17 mpg (hand calculated) after 1,350 miles city/highway combined.

 

[HorsesRear]

I turned that fuel mileage thing off on the display and since I did that I have been a much happier driver. I just drive it like I stole it and enjoy the ride.

 

[danimal2000]

I get 17ish daily commute which is about 50/50 hwy/city.

Road trips around 65mph I get 19 or 20. But I often go 70+ and end up in the 17mpg range.

Towing a 4500lb camper from Chicago area to Maine, 11 to 11.5mpg going 63 pretty much the whole way

I don't think I've ever done better than 20ish and I'm at about 32k mileage

 

[Hunter#1]

I also check milage myself versus the display, it's usaualy a half mpg off. No complaints here.

 

[pchappy2.0]

I get 14-15 around town in Charlotte with the 3.6, recently drove to Raleigh and back and got about 18-20, and that is on 37's with factory 4.10s (Rubicon trim). Both a hell of a lot better than my TRX I had at 9mpg lol, on premium fuel none the less. I didn't buy either for fuel savings, but it is funny to compare sometimes.

 

[AmishMike]

@danimal2000 That is about right, I have towed from Florida to Mt Washington and all over the east coast. However, I learned that I can jump my sweet spot from 63mph to 72mph buy using 91+ octane; and gain 1-1.4 mpg. My guess is that with 87, it is retarding everything like crazy and the higher octane opens things up. I noticed more of a difference in the hills/mountains and less so on the flat.
Economically the 1 mpg is worth it and ~9 mph is huge on a long trip.

 

[danimal2000]

@danimal2000 That is about right, I have towed from Florida to Mt Washington and all over the east coast. However, I learned that I can jump my sweet spot from 63mph to 72mph buy using 91+ octane; and gain 1-1.4 mpg. My guess is that with 87, it is retarding everything like crazy and the higher octane opens things up. I noticed more of a difference in the hills/mountains and less so on the flat.
Economically the 1 mpg is worth it and ~9 mph is huge on a long trip.

Ah great info. I considered higher octane but have only done 87. Thanks for the info I might give that a try going back. Do you have auto and let the truck do it's own switching? Or manually adjust on hills as you go up and down?

 

[JW Jeep]

Brand new here...just picked up my new-to-me 2022 Gladiator High Altitude today...

Question on gas mileage: What do people expect to get? Going 75mph on the highway, without significant wind, flat ground near sea level, with A/C on, I showed average 14 MPG over 300 miles. I was expecting closer to 20. The sticker says to expect 22 highway.... Is that what others see? 15K miles on the truck

Thanks in advance...looking forward to getting immersed in the Jeep culture...

Posted this yesterday in a post:
So much negative on this forum, me included. I thought I would post a positive account. Yesterday Father’s Day decided after church to take alittle drive and go out to lunch. We are here in Colorado s western slope area. We took Rte 50 to delta Colorado which is always windy anyway but yesterday it was extremely windy with winds in every direction. Jeep did great with alittle fighting at the wheel at about 70 mph. We got past Delta a ways and had lunch at Cassie Bees (great place if your ever in the area). On the way back instead of fighting the wind on the wide open range we went over the Mesa on Rte 65 climbing up to 10,000 feet. Well it was very windy at the top !! We got about home and I said boy !! I bet we lost some gas mileage on that run so I checked it and I was surprised it read 24.5 mpg average. It was at 23.5 before that little 100 trip. The gladiator did great even bucking the wind and had plenty of power with 85 octane gas. Actually was pushing altitle on a few vehicles climbing especially a newer ford pickup that seemed to be lagging ?? Stock Overland

 

[AmishMike]

Ah great info. I considered higher octane but have only done 87. Thanks for the info I might give that a try going back. Do you have auto and let the truck do it's own switching? Or manually adjust on hills as you go up and down?

If I think about it, I shift manually; usually I let it do it's own thing. It is difficult coming out of big-block trucks to get used to the rpms, but once I accepted that it is a high revving V-6, it is okay.

 

[ShadowsPapa]

i've found no difference at all with mpg vs. octane. I've tried 91, even 93, and saw no difference towing or not towing.
I can get almost 14 mpg towing 5,000 pounds on I80 east with all the hills. But then I limit towing speed to 65 max.

Pretty sure the EPA Mileage test is done on level ground at 55mph

You aren't far off..............

I got a lot better mpg when my truck was stock on stock tires at stock height and stock WEIGHT.

Wind matters, hills matter.

I also let it handle the RPM itself. That means I see 3000's and 4000s pretty frequently. It's like they told me when I bought my Silverado with the LS engine - it likes revs, that's where the power is. Don't try to force it to stay at low RPM but don't over-do it, either.

 

[Alan_Hepburn]

My stock 2020 Sport S, with 3.73:1 gears, and AS tires, gives me a reliable 22 mpg running on the freeways at 65-70 mph. Driving from the SF Bay Area to San Diego and back on I5 I saw an average of 25 mpg, including climbing the Grapevine and descending the other side, both directions. I actually get slightly better mileage than my wife's 2022 JLU SS, again completely stock (3.45:1 gears, AS tires)

 

[drexotic]

I get 14-15 with my 2023 Mojave but I have a heavy foot (80-ish on the freeway). With a bed rack and gear that drops to the high 13's.
I believe that my milage may improve with regearing. It (my Mojave) really does not like that sweet (milage) spot at ~22,000 rpm.

 

[Kirk*Mojave]

I get a bit over 16 mpg that's it..

 

[Dickies Outdoor's]

I get about 14-16 hwy.. manual trans... 75mph

Seems pretty normal

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