First real world diesel rubicon mpg test

40”JLURD

Well-Known Member
First Name
Ross
Joined
Aug 20, 2020
Messages
591
Reaction score
427
Location
Southern California
Vehicle(s)
2021 JL Unlimited Rubicon Diesel
Occupation
Bad Mother Fucker
The torque of the ecodiesel already has me interested in trading my 2.0.
27 mpg in a JLUR is fantastic. That’s almost 500 miles range.
I don’t think 500 is realistic - when the regen kicks in and the exhaust fuel injector starts spraying your mpg drops by a few. The best I’ve done on a tank is about 400 which is still pretty good.

But my motor is still breaking in (about 1,600 on it at the time of 27.3MPG) I hear these eco diesel will pick up another 2-3 mpg highway after they are fully broken in. (8-10k)

When I got 27.3 it was driving from Palm Springs to Redondo Beach basically so it was a very flat drive with elevation close to sea level. If you start going up grades it will go down also.

That being said I literally can’t get this thing to get less than a 22.3 MPG average even around town no highway, and I have a heavy foot. So it’s definitely super good for a JLU

I went with the diesel really though because I want to still be getting over 20MPG with the 40” tires.

Jeep going to shop this weekend to get its makeover so next year I should be able to tell you what kind of mileage I can get with the 40’s in a similar scenario.

I bet if I was actually driving 65 I would’ve achieved 30+ MPG in that drive from Palm Springs to the coast. It was just a really long drive so I was hauling ass though.





Advertisement

 
Last edited:

JLURD

Well-Known Member
Joined
Nov 30, 2017
Messages
1,533
Reaction score
2,009
Location
Alaska
Vehicle(s)
2018 Compass Latitude 6MT, 2020 JLUR 3.0
The torque of the ecodiesel already has me interested in trading my 2.0.
27 mpg in a JLUR is fantastic. That’s almost 500 miles range.
I can regularly get over 400 miles pushing 37s, lifted, with several hundred pounds of added mods. Frankly the only reason I’m not trading for a 392.
 

mikem20

Well-Known Member
First Name
Mike
Joined
Dec 29, 2019
Messages
77
Reaction score
55
Location
Woodland, Ca
Vehicle(s)
2020 JLUR, 2017 KL trailhawk
Lol. I get 22 at my best.
thanks for your review!
 

40”JLURD

Well-Known Member
First Name
Ross
Joined
Aug 20, 2020
Messages
591
Reaction score
427
Location
Southern California
Vehicle(s)
2021 JL Unlimited Rubicon Diesel
Occupation
Bad Mother Fucker
I can regularly get over 400 miles pushing 37s, lifted, with several hundred pounds of added mods. Frankly the only reason I’m not trading for a 392.
What gear ratio are you running?
 

40”JLURD

Well-Known Member
First Name
Ross
Joined
Aug 20, 2020
Messages
591
Reaction score
427
Location
Southern California
Vehicle(s)
2021 JL Unlimited Rubicon Diesel
Occupation
Bad Mother Fucker

JLURD

Well-Known Member
Joined
Nov 30, 2017
Messages
1,533
Reaction score
2,009
Location
Alaska
Vehicle(s)
2018 Compass Latitude 6MT, 2020 JLUR 3.0
Quite impressive!! Stock gears & stock MPG with 37” tires!
10% under EPA fuel economy average, but yea, still impressive. I do use opti-lube xpd and run milestar Patagonias which have a smaller contact patch at 30psi so I’m sure that’s part of it.
 

Advertisement




Diode Dynamics
 



Advertisement
Top