Sponsored

EPA posts its 2018 2-Door JL Wrangler MPG figures (3.6L V6 Pentastar)

JAY

Administrator
Staff member
Administrator
First Name
Jay
Joined
Jan 13, 2015
Threads
681
Messages
2,176
Reaction score
7,200
Vehicle(s)
Wrangler
Build Thread
Link
Occupation
Admin
Vehicle Showcase
1
Clubs
 
The EPA has published its fuel economy (MPG) numbers for the 2018 Jeep Wrangler Unlimited 2-Door (JL) V6 model. Here are the EPA's MPG figures:

3.6L V6 Pentastar with 8-Speed Automatic Transmission (JL 2-door):
20 MPG combined (same as JLU 4-door)
18 MPG city (same as JLU 4-door)
23 MPG highway (same as JLU 4-door)

3.6L V6 Pentastar with 6-Speed Manual Transmission (JL 2-door):
20 MPG combined (1 MPG better than JLU 4-door)
17 MPG city (same as JLU 4-door)
25 MPG highway (2 MPG better than JLU 4-door)

These are both higher figures than the outgoing JK 2-door, which was rated at 18/17/21 (auto and manual).


dc9bb152-8555-4828-b447-361689dd7a0b-jpeg.jpg
Sponsored

 
Last edited:

Dynomite1371

Well-Known Member
First Name
Ed
Joined
Dec 13, 2017
Threads
20
Messages
1,393
Reaction score
2,093
Location
Maryland
Vehicle(s)
2018 JLUR, Granite, Steel bumper, Safety, Cold Weather, Tow package, Premium Alpine, Black Leather and Mopar "self draining" Mats
Occupation
Police Officer
So glad I got the V6 again. I like the motor, the transmission seems to make good use of power as well. (in wife's Grand Cherokee) .
 

The Great Grape Ape

Well-Known Member
Joined
Mar 30, 2017
Threads
9
Messages
2,840
Reaction score
4,122
Location
Canadian Rockies
Vehicle(s)
2015 JKU AspenX 5spd , 2015 JK Sport 6spd
Wow, 25mpg hwy on the manual !?!

Interesting considering the taller final overdrive gear of the ZF 8.
I would’ve thought just the opposite, despite both likely pushing against aerodynamic limits.

Interesting to see how that does against the 2.0T pushing into the wind, the manual 2dr may trump the turbo for range if those early release 2.0 numbers hold up.

There was no difference on the heavier Unlimited. Goes to show the effect of weight and possible Aero on driving the Brick at highway speeds.

Interesting though that the 8spd yielded the 1MPG more in the city, likely thanks to a little longer time able to hold first before needing to punch up?

For quick reference ( JL 6spd / JLU 6spd / JL 8spd / JLU 8spd )

DC9BB152-8555-4828-B447-361689DD7A0B.jpeg


PS, they got the tank size wrong on both the JL and JLU, the JKU is 22.5 Gallons, the JLU is 21.5 Gal, and the JL remains 18.5 Gallons.
 

Spank

Well-Known Member
Joined
Mar 29, 2017
Threads
25
Messages
2,400
Reaction score
4,022
Location
Colorado
Vehicle(s)
2018 Jeep Wrangler Unlimited Rubicon, 2020 Dodge Challenger RT Scat Pack
Wow, 25mpg hwy on the manual !?!
And TFL claimed they were averaging that in their loaner JL Sahara with the 8-speed auto. That being the case, I'm hoping the numbers for the manual might be a little higher, too.
 

jeppesen.io

Well-Known Member
Joined
May 11, 2017
Threads
13
Messages
305
Reaction score
312
Location
Seattle, WA
Vehicle(s)
Miata, WR250R, JLU Rubicon
That 6-speed MPG must be a fluke - at speed I would not expect the 2-door to have THAT much less drag.

That said, as 6-speed buyer, its nice to hear what the updated v6 can do! :)
 

Sponsored

Rubi

Well-Known Member
First Name
David
Joined
Dec 25, 2016
Threads
3
Messages
447
Reaction score
218
Location
Connecticut
Vehicle(s)
‘18 Jeep JLR
That 6-speed MPG must be a fluke - at speed I would not expect the 2-door to have THAT much less drag.

That said, as 6-speed buyer, its nice to hear what the updated v6 can do! :)
This direct comparison has nothing to do with frontal aerodynamics; the’re both the same. The difference is in transmissions; the manual is more efficient. This just goes to show there is still some hydraulic loss compared to a direct clutch/flywheel connection.
 

jeppesen.io

Well-Known Member
Joined
May 11, 2017
Threads
13
Messages
305
Reaction score
312
Location
Seattle, WA
Vehicle(s)
Miata, WR250R, JLU Rubicon
This direct comparison has nothing to do with frontal aerodynamics; the’re both the same. The difference is in transmissions; the manual is more efficient. This just goes to show there is still some hydraulic loss compared to a direct clutch/flywheel connection.
Read that again. I was comparing the 6-speed between the 2-door and the 4-door.
 

jeppesen.io

Well-Known Member
Joined
May 11, 2017
Threads
13
Messages
305
Reaction score
312
Location
Seattle, WA
Vehicle(s)
Miata, WR250R, JLU Rubicon
That comes down to the difference in more weight with the 4 door. But, the manual does get better mpg compared to the auto on the 2 door.

Anyway 25 mpg highway is phenomenal.
The wight impacts highway MPG but not city? Thats now how it works. It should be the reverse.

Telling you, something does not add up.
 

Rubi

Well-Known Member
First Name
David
Joined
Dec 25, 2016
Threads
3
Messages
447
Reaction score
218
Location
Connecticut
Vehicle(s)
‘18 Jeep JLR
I’m also wondering how the EPA came up with these figures. It is kind of strange that the auto shows the same mpg for both 2 & 4 door.

I only looked at the difference with the manual between the two models.
 

Armycop

Well-Known Member
First Name
Jay
Joined
Aug 16, 2017
Threads
13
Messages
616
Reaction score
522
Location
Yelm, WA
Vehicle(s)
2012 JK Wrangler, 2010 Camaro SS, 2017 Passat R-Line
So they expect me to believe a 2 door Rubicon on 33s is going to get the same MPG as a Sport on roller skate tires?
 

Sponsored

Rubi

Well-Known Member
First Name
David
Joined
Dec 25, 2016
Threads
3
Messages
447
Reaction score
218
Location
Connecticut
Vehicle(s)
‘18 Jeep JLR
I’ve always seen the EPA as being conservative on their “projections”. I was getting 21 combined on my ‘12 JKR.
 

Bearded_Dragon

Well-Known Member
Joined
Jul 23, 2017
Threads
13
Messages
1,042
Reaction score
1,218
Location
FL
Vehicle(s)
2018 Mojito! Rubicon
I’ve always seen the EPA as being conservative on their “projections”. I was getting 21 combined on my ‘12 JKR.
I agree, for highway I've always got a few MPG more or right on the money with all of my vehicles running 70-75MPH. These are good numbers for Wrangler and I would guess the 2.0L will get 1-2MPG more in the city, maybe 1 MPG more on highway.
 
 



Top