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Old 06-20-2014, 09:52 PM   #1
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Mpg

I know what you're all probably thinking, if you bought a jeep, you didn't buy it for economy. But if you wanted economy, you should of bought a Prius.

I know wranglers aren't made to be Eco friendly have 30MPG. Today I drove by my gas station that I always go too, and the price was $4.04/Gal. THAT IS INSANE!

I know online they advertise all this BS that says will give you better MPG in any vehicle, but a Jeep isn't just any vehicle. I know most of us have already put huge tires and a lift kit on our jeeps (which sucks for mpg), is there anything that can perhaps give us an extra 2-3 more?

I'm currently getting 14 and all I have is a 2.5 lift with 33s. I know that isn't bad, since some of you might be getting 6mpg.

Well if you guys have suggestions let me know!

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Old 06-20-2014, 10:04 PM   #2
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Problem isn't the Jeep..problem is the prices themselves lol

40 hour week at Min wage in 1993: $170
20 gallons in 1993: $22
Roughly 12% of your check to fill the tank

40 hr week at min wage now: $290
20 gallons now: $80
Roughly 29% of your check to fill your tank.

Following the "normal" flow of wages/price of gas over the years we should be paying roughly $35-$40 a week to fill up our tanks.

But not going to happen. These vehicles will become ancient history in my lifetime. The SOLE reason for increased insane prices is cause cars are WAY more efficient today. So as newer cars become even more efficient, these old dinosaurs will become history pieces because we won't be able to fill the tanks. Big Oil is NOT going to lose their profits....

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Old 06-20-2014, 10:07 PM   #3
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would changing the air filter to a k&n or something better than oem help with gas mileage? I'm thinking that if it breathes a little better than it may get a little more miles to the gallon.
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Old 06-20-2014, 10:09 PM   #4
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Ethanol free gasoline and good driving habits.
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Old 06-20-2014, 10:14 PM   #5
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would changing the air filter to a k&n or something better than oem help with gas mileage? I'm thinking that if it breathes a little better than it may get a little more miles to the gallon.
Many, many, many, many threads on here talking about the foolishness of expecting a new air filter to improve mpg. Same with the aftermarket chips, throttle body spacers, etc.

Try to lighten your load (remove rear seat, spare tire, tire carrier) and drive conservatively.
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Old 06-20-2014, 10:20 PM   #6
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You will spend way more money on modifications to improve mpg than you will ever get back in fuel savings. The only things that make a real difference are tires and driving style. I bet you will see a 3 mpg improvement slowing from 70 to 60.
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Old 06-20-2014, 10:31 PM   #7
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Turn off that MPG reading on the dash and fill it up when the fuel gets low. Focus on the Jeep's strengths, like off-road capability, versatility, and fun factor. You'll be happier that way.
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Old 06-21-2014, 06:39 AM   #8
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Quote:
Originally Posted by dasboot58 View Post
I know what you're all probably thinking, if you bought a jeep, you didn't buy it for economy. But if you wanted economy, you should of bought a Prius.

I know wranglers aren't made to be Eco friendly have 30MPG. Today I drove by my gas station that I always go too, and the price was $4.04/Gal. THAT IS INSANE!

I know online they advertise all this BS that says will give you better MPG in any vehicle, but a Jeep isn't just any vehicle. I know most of us have already put huge tires and a lift kit on our jeeps (which sucks for mpg), is there anything that can perhaps give us an extra 2-3 more?

I'm currently getting 14 and all I have is a 2.5 lift with 33s. I know that isn't bad, since some of you might be getting 6mpg.

Well if you guys have suggestions let me know!
I went thru the same thoughts about 8-10 years ago. At the time, the price of gas was rising. The media was claiming that it would hit $5 per gallon, and some claimed it would keep going to $10 per gallon.

I had my XJ, and was getting around 16 mpg around town.

I decided to sell my XJ, and buy a hybrid AWD SUV.

Yea, that SUV got double the mileage around town, 32 mpg. But it just wasn't as much fun. It wasn't a Jeep.

It was a trouble free SUV and I "suffered" thru driving it for almost 8 years. But finally I though 'enough is enough', sold it (within hours of listing it for sale), and bought the JKURX.

Back to 16 mpg around town, but enjoying every oz of it.
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Old 06-21-2014, 06:47 AM   #9
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The best ways to increase fuel economy are to remove excess weight from the vehicle, increase your tire pressures to reduce rolling resistance, and change your driving style. Be easy with the throttle and try to stay as smooth as possible. You could also try synthetic fluids but I wouldn't put any more money into the endeavor than that.
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Old 06-21-2014, 07:18 AM   #10
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Thanks guys! I would never think about selling my jeep lol. I did change the air filter to a banks one. I was looking to actually taken off the rear tire but I'm not sure how that will look. I'm going to try to search pics with people without the spare tire and what mods they did.

I like the idea taken out the rear seat since I NEVER go there. I have a two door, and I personally was thinkin of puttin a single seat in there somehow side ways.

Thank you everyone for your inputs!
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Old 06-21-2014, 07:24 AM   #11
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I found the best fuel mileage I get is with the tops and doors on, the aerodynamics with them off drop my mileage to about 16 from 18.5-19. Oh well I Guess I'm not going to be getting good fuel mileage out of my jeep.
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Old 06-21-2014, 07:28 AM   #12
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I found the best fuel mileage I get is with the tops and doors on, the aerodynamics with them off drop my mileage to about 16 from 18.5-19. Oh well I Guess I'm not going to be getting good fuel mileage out of my jeep.
I heard the same thing. I stay at a constant 14 with the A/C on. I would be happier tho is I got around 20 with the tires and lift I have in it. Plus the rock rails 😐
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Old 06-21-2014, 07:36 AM   #13
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The best ways to increase fuel economy are to remove excess weight from the vehicle, increase your tire pressures to reduce rolling resistance, and change your driving style. Be easy with the throttle and try to stay as smooth as possible. You could also try synthetic fluids but I wouldn't put any more money into the endeavor than that.
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Old 06-21-2014, 07:44 AM   #14
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Always drive with the wind at your back. But seriously,speed is definitely a big factor. I've noticed a savings just by staying around 60-65 on the hwy. Getting above that seems to increase the fuel consumption more than by just what the increased speed would on another vehicle. The "brick" factor really kicks in for the Jeep at higher speeds.
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Old 06-21-2014, 09:48 AM   #15
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Always drive with the wind at your back. But seriously,speed is definitely a big factor. I've noticed a savings just by staying around 60-65 on the hwy. Getting above that seems to increase the fuel consumption more than by just what the increased speed would on another vehicle. The "brick" factor really kicks in for the Jeep at higher speeds.
65mph is my tipping point. At 60 I get about 17.5mpg at 70 it drops to 15mpg. Anything above 70, forget about it.
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Old 06-21-2014, 10:02 AM   #16
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Warm weather helps a lot too, both due to summer gas formulations and reduced drag.
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Old 06-21-2014, 11:07 AM   #17
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I have a 2014 JK. Just got back from upstate NY (500 mile round trip) got 23.9 mpg on the highway. I have a 3.21 rear and I kept the cruise control at 66mph.
I think it's fantastic because I come from 4wd trucks that get @ 18 mpg highway
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Old 06-21-2014, 11:57 AM   #18
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Originally Posted by Locruid View Post
Problem isn't the Jeep..problem is the prices themselves lol

40 hour week at Min wage in 1993: $170
20 gallons in 1993: $22
Roughly 12% of your check to fill the tank

40 hr week at min wage now: $290
20 gallons now: $80
Roughly 29% of your check to fill your tank.

Following the "normal" flow of wages/price of gas over the years we should be paying roughly $35-$40 a week to fill up our tanks.

But not going to happen. These vehicles will become ancient history in my lifetime. The SOLE reason for increased insane prices is cause cars are WAY more efficient today. So as newer cars become even more efficient, these old dinosaurs will become history pieces because we won't be able to fill the tanks. Big Oil is NOT going to lose their profits....

I thought about this very thing alot recently. I had a truck in 93 that I drove a bunch back and forth to/from VA to PA on my days off to visit family. Back then a 20 dollar bill would fill it up almost on E(26gal tank)....now that same tank would take 100 dollars to fill up from E. I can assure you my paycheck hasn't gone up 4 times higher ! I don't know how I could have done hardly any driving home if it were todays prices. My Wrangler gets better mileage than my trucks ever did. I'm up over 22 on the highway keeping the cruise at about 58-60mph(no lift/stock wheels).
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Old 06-21-2014, 12:03 PM   #19
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Warm weather helps a lot too, both due to summer gas formulations and reduced drag.
Around here, they seem to now be sticking with the "winter" E10 year round.
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Old 06-21-2014, 12:13 PM   #20
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Changing to a performance filter doesn't help at all. I have one in now, oil version. I also have a dry flow I tested, same thing. I mainly bought it so I didn't have to keep paying for filters.
But like some have said. Making the vehicle weigh less helps. Any unneeded weight you should get rid of. You may not see a dramatic gain, but it'll help.

I've average 16mpg. Many people will tell you they get 18+mpg. They usually are going by the cluster. You can't go by that since it's not the actual reading. You have to calculate it your self.

Quote:
Originally Posted by dwhit View Post
would changing the air filter to a k&n or something better than oem help with gas mileage? I'm thinking that if it breathes a little better than it may get a little more miles to the gallon.
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Old 06-21-2014, 12:40 PM   #21
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Changing to a performance filter doesn't help at all. I have one in now, oil version. I also have a dry flow I tested, same thing. I mainly bought it so I didn't have to keep paying for filters.
But like some have said. Making the vehicle weigh less helps. Any unneeded weight you should get rid of. You may not see a dramatic gain, but it'll help.

I've average 16mpg. Many people will tell you they get 18+mpg. They usually are going by the cluster. You can't go by that since it's not the actual reading. You have to calculate it your self.
I've calculated gas mileage multiple times. The most the EVICs been off was .5 mpg and that was once. Its usually .3 mpg too high. Definitely not enough to hand calculate everytime, well at least for me it isn't.
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Old 06-21-2014, 12:44 PM   #22
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New jeep owner here. Coming from a 06 chevy trailblazer the mpg isnt much of a difference to me. Maybe an extra $15 a week. well worth it! love my jeep!
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Old 06-21-2014, 12:53 PM   #23
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I have a 14 unlimited sport with 285/70 r17 duratracs on and that is it. What I've noticed with the jeep, more so than other vehicles, is that the stop and go of city driving, as well as a lot of short trips destroys my MPG. After I adjusted my odometer by using a procal (measured 32 in, and I inputted 31.5 into the procal to match my gps) I'm confident the EVIC has the right mpgs. I do a lot of city driving and average around 14-15mpg with what I would consider a heavy foot, on the freeway averaging 75, I get around 18, I'm sure I could eke out a little more in my city driving, but I was kind of expecting these MPGs which are pretty close to the factory ratings, using heavier tires and 3.73 gearing.

Best thing you can do is change driving habits, and depending on how conservative you get, you could probably eke out a 1-2 additional mpgs. There is no smoking gun type product that will automatically increase MPG
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Old 06-21-2014, 01:38 PM   #24
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In my 11 Jk 3.73 w/stock 255/75r17 sr-a's I'm averaging anywhere from 12-14.3 mpg (lowest about 10mpg) living/driving in Philly. I routinely get about 19mpg on the hwy the best I've had so far was 21.3mpg on the hwy (all hand calculated). I stick around 65mph. The stop and go traffic around here is horrible and kills my mpg. If you ever driven on 76 between 202 and 95... You know what I'm talking about.

I'm getting 33/12.5r15's this upcoming week. So I'll see how that does after I get it calibrated for the new size.
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Old 06-21-2014, 02:06 PM   #25
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man sounds like I got the end of the stick. with 33's on a good day I'm getting about 14 mpg. thats without a spare tire and only minor road rage towards the jackass drivers here in austin.
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Old 06-21-2014, 06:02 PM   #26
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Must be nice to be paying ONLY $4.04 per gallon. In Ontario we are paying $1.41 per litre which equates to approx $5.33 per US gallon. So $1.30 more per gallon. I love my trips to Port Huron Mich a lot more now!
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Old 06-21-2014, 06:08 PM   #27
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I've only got 650 miles on my 14' JK, but I've been averaging about 15.5 MPG's so far. My last 10' JK was averaging 16.5 MPG consistently. I'll probably be adding a K&N as well, only to avoid having to constantly be buying air filters at every service. K&N you just wash and its good to go. Much easier.
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Old 06-21-2014, 06:10 PM   #28
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2014 rubicon unlimited 4.10 gears, automatic with 34's (285/75-17) 2" lift and filled up today and hand figured 18.4mpg which was slightly lower then the jeeps mpg figure. Normal mpg in summer has been 17-20mpg depending on how fast I drive. Speeds over 75mph get worse speeds under 70mph get better. Off road I do not count as that can be 6 or 7mpg at the end of a long day.
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Old 06-21-2014, 08:04 PM   #29
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Must be nice to be paying ONLY $4.04 per gallon. In Ontario we are paying $1.41 per litre which equates to approx $5.33 per US gallon. So $1.30 more per gallon. I love my trips to Port Huron Mich a lot more now!
Yeah, I always chuckle to myself when I hear our US friends complain about gas prices.
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Old 06-21-2014, 08:16 PM   #30
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I live in quebec Canada and today I fueled up at 1.53 liter or 6.12 gallon .It is what it is , I'll still take my jeep over a generic boring 4cyl SUV any day .

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