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Fuel Mileage for Gladiator EcoDiesel 28 MPG Highway?

WXman

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I haven't seen anything official. Kind of funny that they're taking orders for these, but haven't released all the important info. on them. :)

The Ram 1500 window sticker shows 29 MPG highway. I can tell you that I've never seen anything remotely close to that, even with the cruise set at 70 on open roadway.
To add to this, if you look at Fuelly.com where owners hand calculate their mileage and the website averages it all together, you'll see that there's over 40,000 combined miles accounted for on the JL Wrangler EcoDiesel now, and the average MPG is 20.7.

That lines up really well with the 21 MPG I'm seeing with the Ram as well in mixed driving.

And, apparently on the 2021 model year window stickers, the MPG has been decreased, which is likely closer to average but still optimistic based upon real-world reports.
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Jeepasaurus_Rex

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So far I've got just over 800 miles on mine, and am averaging 21mph city, and 23 highway with a full height bed rack and RTT
 
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I am on my second tank of fuel. My driving is mixed city and highway and the average is at 23+ and climbing steadily.
 

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I just filled up yesterday after emptying the dealership filled tank. I am averaging 24.8 mpg according to the computer. When I set the cruise btwn 65-70 it shows 29-33 mpg when not against a headwind. 70 -75 it shows 28-31, so not bad at all. I wonder where it will go when the 37's are on it! Can't wait to get em on.....
 

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I just filled up yesterday after emptying the dealership filled tank. I am averaging 24.8 mpg according to the computer. When I set the cruise btwn 65-70 it shows 29-33 mpg when not against a headwind. 70 -75 it shows 28-31, so not bad at all. I wonder where it will go when the 37's are on it! Can't wait to get em on.....
Cant wait till you put on the 37’s either! LOL! Keep us posted!
 

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my dog Trigger

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They use SAE standards to determine tow ratings on trucks, within it’s rated capacity the JT is just as capable as any other truck.
I drove 140 miles Colton to orange, to San Dimas and home 31 mpg

Jeep Gladiator Fuel Mileage for Gladiator EcoDiesel 28 MPG Highway? IMG_4342


Jeep Gladiator Fuel Mileage for Gladiator EcoDiesel 28 MPG Highway? IMG_4343
 

Vtur

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I drove 140 miles Colton to orange, to San Dimas and home 31 mpg

IMG_4342.jpeg


IMG_4343.jpeg
30.2x19gal= 573.8/2= 286.9mi should be at the half tank mark, but your indicating 224mi remaining with fuel level at nearly 3/4 tank. You must hand calculated to gets accurate mpg.
 

brsnow2585

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I run fairly consistently 25-27 unloaded on the 2" Mopar lift, that is a 1-2 lower from what it ran from the factory. Recently did ~1800 mile trip pulling a modest camper and was seeing 17-19, except for one tank, think it might have been a little skunky, was down around 11. I also wasn't pulling the camper ideally, buddy had my good hitch so I was running on a basic hitch a little higher on the tongue than I'd like. I've hand calculated one and off randomly enough to trust the computer is close enough to true.
 
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1945gpw

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I get a consistent hand calculated 26.5 empty and towing a 3500 lb trailer with gear in the bed I get 22 mpg.
 

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You guys must live in flat land with low gravity and never drive uphill to get that kind of mileage. Bone stock, the best i ever got was 27 on a trip. Around town was 22. Now with the 37's. Close to 20 around town and maybe 24 on a trip.
 

brsnow2585

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I'm between 1900 and 2000 feet above sea level, maybe the air is a little thin up here or I need a bigger turbo.
 

1945gpw

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You guys must live in flat land with low gravity and never drive uphill to get that kind of mileage. Bone stock, the best i ever got was 27 on a trip. Around town was 22. Now with the 37's. Close to 20 around town and maybe 24 on a trip.
My towing mpg was mostly all in the Colorado mountains around the montrose Durango and Pagosa springs areas. The empty mpg consists mostly going up to the flagstaff area from Phoenix so some decent climbs but nothing to crazy
 

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Sorry, but 3/4 of a tank left doesn’t count for mpg in these rigs. Show me that average with <50miles range left. I consistently can get 27-28mpg the first half of the tank then drops to 22-24mpg when I spent all but a 1/4 or less of a tank left. Unless you’re calculating it by hand of course. For the 7mi trip from Buccees to my house I can have that average at 38mpg but yeah that’s not the actual average over a tank of fuel.
 

Free2roam

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I used to average 26.8 in the city. Highway was 30+ then I decided to lift it put a camper on it set it up for camping. Now in winter it's maybe 21 summer is now around 22 and change.
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