Diesel mpg

[Mobs]

Was wondering if anyone has 37's on there Gladiator, what there MPG is.
Is the diesel motor better then the 3.6
Thoughts

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[Steven_B]

If I really try, the best I get is 23 on the highway going around 67 (the sweet spot). Otherwise, according to the computer (not hand calculated), I usually average around 19.5-20 with mixed driving. I should also note, I regeared to 4.10 gears. Not bad for an overweight Jeep motorhome.

I also didn't purchase the diesel for the fuel mileage, I wanted the torque of the motor and after 40k miles, I couldn't be happier.

 

[guarnibl]

Was wondering if anyone has 37's on there Gladiator, what there MPG is.
Is the diesel motor better then the 3.6
Thoughts

Just going to list averages.
3.73's.
37" BFG KO2
stock wheels.
4 1/2" of lift.
OEM steel bumper group w/ Winch and front bumper end caps removed.

City = 19.
Highway = 23.

LOVE my ecodiesel. It doesn't care too much about tire weight. Even in Moab running 40's I'm still like 19-20 mpg highway if I keep it to 65-70. I haven't had a single desire to regear. I *did* add the Apex steering boost, which helped quite a bit when aired down in the rocks. It's no PSC, but it helps enough to be happy.

You get the torque of the 392 with double the fuel range. It's wonderful.

 

[Wango's Tango]

Hi,
Have an AEV JTRD, have regularly seen a pencil avg of 21, sometimes a bit higher, rarely lower. Pretty close to what the truck reads.

 

[John in the Woods]

Just going to list averages. ...

Ditto.

3.0L diesel
Factory 3.73 gears
37" Mickey Thompson Baja Boss ATs
AEV Borah wheels
2" Mopar lift
Factory steel bumpers with winch in front
Soft top

19 mpg around town, 20 if I try hard
23 mpg highway average, with 55-65 mph as the sweet spot (24-25 mpg there)

Of course, can't say the price of diesel fuel makes the cost-per-mile very friendly, but I got this engine for the trail torque

So far, I'm at 52K and loving every mile.

 

[guarnibl]

Ditto.

3.0L diesel
Factory 3.73 gears
37" Mickey Thompson Baja Boss ATs
AEV Borah wheels
2" Mopar lift
Factory steel bumpers with winch in front
Soft top

19 mpg around town, 20 if I try hard
23 mpg highway average, with 55-65 mph as the sweet spot (24-25 mpg there)

Of course, can't say the price of diesel fuel makes the cost-per-mile very friendly, but I got this engine for the trail torque

So far, I'm at 52K and loving every mile.

Yeah diesel fuel has been pricey lately, unfortunately. Similar to you though, I bought it for the torque (and range, to be honest -- not the cost).

I've only got 17k on mine, you've got 3x on me! Doing a few trips from AZ to FL this year so that help me catch up ha.

 

[Texicon]

I'm in the Northern Virgina area and here is what I am seeing with my well optioned JTRD

2" Mopar Lift
Stock 3.73 gears.
37"x 12.5" BFG KO2 "D" Rating
Icon Rebound wheels.
OEM steel bumper group w/ Badlands 12K Winch.
BAK X4 bed cover
City = 19.
Highway = 23. if I can keep my speed at or under 70 MPH and 21 go 22 for 75-80 MPH.

 

[John in the Woods]

Yeah diesel fuel has been pricey lately, unfortunately. Similar to you though, I bought it for the torque (and range, to be honest -- not the cost).

I've only got 17k on mine, you've got 3x on me! Doing a few trips from AZ to FL this year so that help me catch up ha.

Sorry to briefly highjack ... Funny, I'm planning Florida to Arizona (and beyond) this spring. Let me know if you have any tips on places to stop.

 

[guarnibl]

Sorry to briefly highjack ... Funny, I'm planning Florida to Arizona (and beyond) this spring. Let me know if you have any tips on places to stop.

Will do! Going to do a big trip in March before Moab (EJS) likely. Not looking forward to the initial I-10 mania drive where it's basically 4 turns from Phoenix to Sarasota because you're on I-10 for 2000 miles.

 

[Mobs]

If I really try, the best I get is 23 on the highway going around 67 (the sweet spot). Otherwise, according to the computer (not hand calculated), I usually average around 19.5-20 with mixed driving. I should also note, I regeared to 4.10 gears. Not bad for an overweight Jeep motorhome.

I also didn't purchase the diesel for the fuel mileage, I wanted the torque of the motor and after 40k miles, I couldn't be happier.

Thank you so much..I have a 2018 wrangler unlimited Sahara that I might be trading, and the gladiator was diesel

 

[Camaroboi13]

2022 JTOD
2.5” front level .75” rear spacer
Ironman 37” MT
Steel bumper w winch
Soft bed cover
Stock gearing

60-70% highway driving in Southern California traffic at 74-78mph gets me 21-22mpg. On stock tires I was 28-29mpg same setup.

 

[Jefe1018]

2021 JTRD, Mopar Lift, 37x12.5 General Grabber ATX’s roughly 80% city. This is what I’ve tracked with Fuelly.

 

[Burghardphotography]

If I really try, the best I get is 23 on the highway going around 67 (the sweet spot). Otherwise, according to the computer (not hand calculated), I usually average around 19.5-20 with mixed driving. I should also note, I regeared to 4.10 gears. Not bad for an overweight Jeep motorhome.

I also didn't purchase the diesel for the fuel mileage, I wanted the torque of the motor and after 40k miles, I couldn't be happier.

Do you feel like the 4.10s were enough, or do you wish you went to a 4.30 or 4.56?

 

[Steven_B]

Do you feel like the 4.10s were enough, or do you wish you went to a 4.30 or 4.56?

I am happy with the performance. 4.56 would be too much and 4.30s weren't available. I think Nitro only ran one batch of 4.30 gears which I would have gone with because of the weight of my Jeep. If your Jeep isn't heavy, then not sure the gear change is really necessary with the diesel. Or just keep an eye out for take-out 4.10s from a gasser upgrading gears.

 

[Tommyd]

Just going to list averages.
3.73's.
37" BFG KO2
stock wheels.
4 1/2" of lift.
OEM steel bumper group w/ Winch and front bumper end caps removed.

City = 19.
Highway = 23.

LOVE my ecodiesel. It doesn't care too much about tire weight. Even in Moab running 40's I'm still like 19-20 mpg highway if I keep it to 65-70. I haven't had a single desire to regear. I *did* add the Apex steering boost, which helped quite a bit when aired down in the rocks. It's no PSC, but it helps enough to be happy.

You get the torque of the 392 with double the fuel range. It's wonderful.

Did you install the apex yourself? Is it a hard job? Thank you

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