- Reply to Topic
Thread: Whats your MPG? Reply to Thread

Register Now

In order to be able to post messages on the forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.

Email Address:


  Additional Options
Miscellaneous Options

  Topic Review (Newest First)
07-28-2019 04:24 PM
RubiconFreedom One week of driving on the new 285/75/17 E @35psi have not been so pleasant. I'm under the impression that I'll need to up the tires to 38psi as I've done all of my other jeeps. For some odd reason 38psi tends to ride better with me. Otherwise we've very happy with the Nitto Ridge Grapplers on the reproduction hard rock wheels. Now the challenge of keeping it clean. The other down side to this, even after checking all the specs and comparison pages on going from 245/75/16 to 285/75/17 our fuel economy has dropped slightly. City was 16.9 Highway was 19.8 Now it's City 15.6 Highway 18.7 Again not much of a drop but a drop none the less. But as said several times by other wrangler owners, if you wanted best or better fuel economy, you should have purchased something else. I'll check the tires tomorrow morning with 38psi and report back with any findings or improvements.
04-29-2019 12:18 AM
RubiconFreedom This is something we've been keep tabs on since replacing a few of the suspension components and new steering components on our jeep. I'd have to say before 20K miles the jeep was getting around 20 City 24 highway. Since adding these new products to our Wrangler, we're getting in the 17's highway. However a few weeks back I noticed a significant drop in MPG when the front drag link, steering damper, tie rod end links were damaged while driving over a pot hole. Our MPG dropped to 15.2. We've since corrected this with a re-alignment and the MPG is back up to 18.9 This is on the 16'' factory steel wheels & 31'' dueler tires.. prob one of the worse combinations. Most tire charts seem to indicate that with an upgraded tire wheel combination, we'll be able to achieve better MPG in the future. looking to see maybe a 2% increase in the MPG after the new wheels and tires have been mounted. I look forward to reporting back with these results afterward.
04-28-2019 04:21 PM
LewisR91 Update...2004 Jeep WJ with 4.7 HO, 45rfe with 2800 stall. Cat delete, O2 delete (open loop), custom Y pide, thrush chambered, exhaust wrapped to tail pipe. NGK #8 non resistor plugs, 03 intake manifold, IAT relocated to charge pipe, IACV delete, throttled body sealed with epoxy were IACV was. TPS screw guides punched for further left to right adjustment (timing advance, set at 18 idle), 48lb injectors, holley fuel pump, LS fuel filter/regulator (58lb regulator), straight E85, PCV delete, catch can with adjustable vacuum regulator set at 20.5HG idle, royal purple 5w30, mobil 1 filter, front drive shaft removed, think thats it. Torque app reads 349-359HP consistantly. 240k miles. Currently 11.1 MPG overhead screen. Hangs with 2018 5.0 mustangs all day. Pulls away from 90's 2000's LS camaros, 5.0 mustangs, diesel trucks, GTO'S ect. Pulled away from a 2014 Camaro SS up a hill until the hill flatened out haha! Fun truck, very sleeper.
02-08-2019 10:04 PM
gspfunk 13-14 mpg on avg. in the WK SRT. It might be better if I could ever keep my foot out of it.
12-12-2018 05:12 PM
222Doc last i checked was running it around the Tahoe area so lots of grades, mountain roads. Was getting 14mpg on 37s with 4.5 lift with 4.1 gears W580 auto 3.6L 2012 2 door jkr no top no doors just gear as always. That gear included a fulls set of rear and front axles and camping gear/food water other junk for 4 days on the trail.

same jeep new on 32s stock, new. same gears. 18/19mpg. hard top on, doors, stock seats, all stock.
12-09-2018 06:54 AM
LewisR91 I drive a 2004 WJ Ho.

Cat delete
Custom y pipe with wrap
Glass pack through Thrush Welded
No pre or post O2 sensors
#10 TCM wire snip
IAT relocated to resonator inlet
3/4 E85 1/4 93

Torque app reads consistent 290's HP

231k 12mpg
07-04-2016 08:56 PM
hoggr '06 TJ 4.0 I get 12 mpg with 33's, 3.5" OME lift, Gobi roof rack!!! MPG not a concern for, I enjoy the TJ for what is and why I own it!!
05-30-2015 09:54 PM
HooptieZJ 96 ZJ 5.2 18mpg with my little yokohama street tires, 12.8mpg with the 32x11.50 bf good MT's
05-29-2015 01:29 PM
TJCrawling 2004 TJ Rubicon close to 5" total lift with 4:10 gear and 35" KM2's auto using overdrive and getting 13 to 14 MPG, actually think that's pretty good and would only get better with a gear swap to 4:88.
05-08-2014 04:43 PM
Lobotomy Weight reduced, but otherwise stock '83 AM General DJ-5L.

I get roughly 30 city, 35 highway.
05-08-2014 11:16 AM
AngryRedBird 2012 w/ BFGoodrich Mud Terrain 255/75/17 Tires = 15 - 19 (87 Oc Fuel)
2014 w/ Goodyear Wrangler SR-A 255/75/17 Tires = 18 - 24 (93 Oc Fuel)
05-07-2014 08:42 AM
rjbruzan 98 XJ bone stock 4.0 automatic 3.55 gears 225/75 15s with 219000 miles. Loads of tools in the back averages about 18MPG. Thats highway, city and stop and go. Just returned from Wisconson loaded pretty heavy all highway at 65-75 mph and got 21.5 MPG. Best to date.

04-30-2014 11:36 AM
Danaallen777 I haberdasher a 2013 rubicon unlimited with 3" lift and 33 all terrain tires and I average 15 miles per gallon
04-14-2014 12:48 PM
TomTJ97 TJ 4.0 on 3/4" pucks and 30" firestone destinations. 16 highway, 12 city. ive been averaging 14.5 around town that's driving thinking about it.
04-09-2014 10:55 AM
Leyva_WJawd I think a I'm at about ~14 city and ~18 highway. Stockish 4.7L V8 with 114k miles.
This thread has more than 15 replies. Click here to review the whole thread.

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

For the best viewing experience please update your browser to Google Chrome