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Old 03-04-2012, 01:50 PM   #61
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btw this is how i improved my MPG...

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Old 03-04-2012, 05:15 PM   #62
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I avg 17.6 at 40k miles in a 2008 JK X, no lift or heavy mods aside from replacing the plastic bumpers with some heavier tubular ones.

50% highway, 50% city, but here in austin you rarely get over 70 on the highway.

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Old 03-04-2012, 05:44 PM   #63
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Drove up to the mountain this weekend from san diego. averaged 21.3 mpg over the enitre tank it took to get there and back. was cruising about 70-71 on the highway, plus I had to climb up 8000ft.
it's a 2012 2 door with stockers on it still
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Old 04-09-2012, 03:23 PM   #64
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Getting better milage

I have a 2007 Unlimited Wrangler currently at 95,000 miles and I noticed today that my MPG was around 24.5 ish. This blew me away because normally I'm around 19. Only thing I did that I can think of is the other week I added some fuel injector cleaner from QT to half a tank of gas. The next fill up I noticed the MPG increase. I normaly drive about 100 miles round trip a day and stay around 60-65 mph and its all highway driving.
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Old 04-09-2012, 03:26 PM   #65
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Only drive down hill

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Old 04-10-2012, 03:31 AM   #66
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Using the ECO indicator in rural Germany, I manage to average 18 mpg. Lots of steep hills, but the autobahn and country roads makes it a bit easy. I am not bragging, as far as I know that ECO and MPG reading could be full of BS.

Ok, I am bragging that I am stationed in Germany....just a little.
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Old 04-10-2012, 03:41 AM   #67
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Using the ECO indicator in rural Germany, I manage to average 18 mpg. Lots of steep hills, but the autobahn and country roads makes it a bit easy. I am not bragging, as far as I know that ECO and MPG reading could be full of BS.

Ok, I am bragging that I am stationed in Germany....just a little.
I am Jealous, I lived in Germany for 7 years. Enjoy it all.
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Old 04-10-2012, 08:22 AM   #68
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I average 20.2 hand calculated with a 2012 automatic after 4 fillups. I have a 52 mile commute with 44 stop lights. I'd describe my driving style as "smooth" but I don't necessarily baby it. I don't tailgate or drive herky-jerky if you get my meaning.

We also have a 2011 Chrysler Town and Country with the same Pentastar engine. It averages about 1mpg better in town driving and 4mpg better on the highway carrying the family. So the Pentastar engine can certainly do better when it isn't pushing so much wind and rotating mass.

For comparison we also have a 2005 VW Jetta diesel. It gets 38mpg around town and 50mpg on the highway. When I feel bad about my Jeep mileage I'll drive the Jetta for a couple days to increase my fuel economy
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Old 04-10-2012, 04:51 PM   #69
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At this point most of the depreciation on the car has already occurred. I can sell it in several months for nearly as much as I paid for it, if not more since I got the thing for way under the KBB estimate.

In the meantime, it saves me a little over $11 per day in gas. And that's ONLY for the commute, not for any other travel (which I do a lot of). The monthly cost of the car, plus insurance, plus gas comes out to way less than $11 a day.

I'm not stupid. There's no need to insult me, especially with only a limited understanding of all of the variables.

I'm pretty sure you're the one not checking all the variables. Buying a second car to save money on gas almost never works. Do you know how much per mile that car costs to drive?

Registration
insurance
maintenance
depreciation
just to name a few.

Not to mention the money you could be making on the money you used to buy it with. You have to factor that in too.

You're, more likely than not, losing money.
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Old 04-11-2012, 07:00 AM   #70
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Just returned from a 1200 mile trip-mostly interstate driving and got 21.6 mpg in my 2012 JKU!
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Old 04-11-2012, 07:08 AM   #71
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Quote:
Originally Posted by Posts On Percocet

I'm pretty sure you're the one not checking all the variables. Buying a second car to save money on gas almost never works. Do you know how much per mile that car costs to drive?

Registration
insurance
maintenance
depreciation
just to name a few.

Not to mention the money you could be making on the money you used to buy it with. You have to factor that in too.

You're, more likely than not, losing money.
But he is also not beating the jeeps odometer up, and destroying the jeep with wear and tear. I would guess in most cases, the other car would be preferred to have stuff break on. Plus can't really make money on money simply anymore.
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Old 04-11-2012, 07:39 AM   #72
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Easy solution for you all. Get a jeep and put an aerodynamic cone on the front and the back. And instead of using the engine for roads I've replaced mine with squirrels in a big running rig.(on the road only, they don't put out enough torques for rock crawling) after doing this you will A) not be using gas therefore your fuel economy is perfect. B) saving the world. C) saving your wallet. And D) looking great. Here are some pictures.

I'm still waiting for the cones. I'll see pictures once if put everything together.
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Old 04-11-2012, 07:44 AM   #73
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Originally Posted by smartboy00 View Post
I have a 2007 Unlimited Wrangler currently at 95,000 miles and I noticed today that my MPG was around 24.5 ish. This blew me away because normally I'm around 19. Only thing I did that I can think of is the other week I added some fuel injector cleaner from QT to half a tank of gas. The next fill up I noticed the MPG increase. I normaly drive about 100 miles round trip a day and stay around 60-65 mph and its all highway driving.
I'm right there with you. Most of my driving is highway, but I only drive about 20-25 miles a day round trip. If you can hypermile on hills it really helps. I am pulling about 20.7 avg. MPG on a 2010 Sport.
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Old 04-11-2012, 07:56 AM   #74
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Sorry wrong forum
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Old 04-11-2012, 08:03 AM   #75
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I'm one of those nuts who keeps track of gas mileage on a continuing basis. I log every fill-up and manually calculate MPG.

I bought a brand new 2012 JK Sport with the "S" order package and the soft top on 3/21/12. I have the six speed manual tranny and the 3.21 differential gear ratio. The Jeep is bone stock and will probably stay that way. I'll do just very mild off road stuff with it.

The Jeep has approximately 900 miles on it now. My driving is mostly on two lane rural roads and a little bit of driving in small towns, no stop and go city driving. I drive fairly conservatively but not like a grandma. I wind out a gear once in a while for fun.

The MPG for my first three fill-ups has been 19.1, 19.7, and 21.1. I am VERY happy with those numbers! My old Jeep, a 2001 Sport, never got MPG like that even when bone stock.

Tom

P.S.

I LOVE that 3.6 L Pentastar! I'm thrilled with the power it has and with the gas mileage I am getting. I do miss the low end torque of the old 4.0 L inline six, though.
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Old 04-11-2012, 09:55 AM   #76
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I went 325 miles on a full tank, mixed city and hwy driving. 3.8 engine JKU
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Old 04-11-2012, 10:12 AM   #77
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12,000 miles average per year

Let's say Jeep gets 20mpg and the "2nd car" gets 30mpg

That's about 200gal per year difference which works out to ~$700-750.

That has to be an awfully cheap 2nd car for it to make sense to get one to try to save money

(and that's assuming you would drive the 2nd car 12,000 miles). Would probably realistically be like half, which would bring the money saved down even more
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Old 04-11-2012, 10:27 AM   #78
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do you guys think the EVIC displays the right info regarding mpg?
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Old 04-11-2012, 10:33 AM   #79
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I recently bought a 2008 JKUR, and am a bit worried about our because the gas mileage seems of e. On the last 900 miles, I've been getting an average of 13.38 MPG.

My jeep has no mods.

Is this normal, or is this indicative of a problem with the car when i bought it? Other than the mileage, i saw/heard/smelled no indication of any mechanical problem. Is it because it's a Rubicon?

I don't drive too fast or aggressively.

I have the stock mud tires on her. It was getting better mileage on my winter road tires, but still....
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Old 04-11-2012, 10:46 AM   #80
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Quote:
Originally Posted by jyp
I recently bought a 2008 JKUR, and am a bit worried about our because the gas mileage seems of e. On the last 900 miles, I've been getting an average of 13.38 MPG.

My jeep has no mods.

Is this normal, or is this indicative of a problem with the car when i bought it? Other than the mileage, i saw/heard/smelled no indication of any mechanical problem. Is it because it's a Rubicon?

I don't drive too fast or aggressively.

I have the stock mud tires on her. It was getting better mileage on my winter road tires, but still....
Depending on the hills how fast you accelerate and the transmission you have this could be anywhere from grossly low to just a little low. If you have a manual tranny try shifting at 2200 rpm. That's what I do and I get 20 all day. If you have an auto try keeping the rpm lower. If you are on the highway with hills in an auto you might be downshifting to 3rd gear a lot which will kill your mileage
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Old 04-11-2012, 11:38 AM   #81
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Has anyone tried buying the "super chips" programmer for the 3.6L? If so does it help at all. After owning a few diesels I am proof that you can get decent miles out of a V8 diesle (I know different animal) but the programmers are the same principle. Thanks.
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Old 04-11-2012, 12:34 PM   #82
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I was wondering the same EXACT question ivel_86.... Does installing a different chip improve HP or fuel economy???
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Old 04-11-2012, 01:41 PM   #83
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Originally Posted by jkjeeper06

Depending on the hills how fast you accelerate and the transmission you have this could be anywhere from grossly low to just a little low. If you have a manual tranny try shifting at 2200 rpm. That's what I do and I get 20 all day. If you have an auto try keeping the rpm lower. If you are on the highway with hills in an auto you might be downshifting to 3rd gear a lot which will kill your mileage
I have a 6 speed. I usually ( though obviously not always) try to drive at or under 2k rpm. Not much hills round here either. I guess my main concern, since i just bought this used car is should i be worried about some otherwise-invisible mechanical problem? What could have causing this low mileage?

It's not my gas bill I'm worried about, but the health of my "new" jeep. Any ideas?
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Old 04-11-2012, 02:15 PM   #84
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Saw a thread about mpg that proposed a different way to look at it... figure out what it costs to drive 100 miles. If you get 20mpg, with gas at $4/gallon, it costs $20. If you get 10mpg it costs $40; 25 mpg, it costs $16. If you get 30 mpg it costs, $13.33; 40 mpg is $10; 60 mpg is $6.67 etc.

The point is "diminishing benefits" with extreme mpg. You get a big gain going from 10 to 20... $20; but if you go from 30mpg to 60mpg... you only save $6.67...

Even if you go from 30mpg to 100mpg, you only save $12.33. If you drive a big semi and get 6mpg, but find a way to get 8 mpg, you save $16.66 every 100 miles.

Kinda changes the perspective some.
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Old 04-11-2012, 03:20 PM   #85
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I find it's great on gas, considering I drove a cayenne S before. The wrangler gets me a lot more bang for my buck at slower speed like previously mentioned, but look, it's a convertible & DIY fun Jeep. What more do you want? Just have fun, relax your driving habits if you feel your driving too fast. Sure you can get 20- 22" rims with fuel economical tires, cold air intake, throttle body spacers, bosh platinum 4 spark plugs, full headers, cat back exhaust and high octane gas...Enjoy the ride, Jeep is al about fun, cruising around, even off roading for many
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Old 04-11-2012, 05:44 PM   #86
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Ok so here is what I did. I converted my fuel calculations from mpg to gpm (gallons per month). I was using about 90 gallons per month driving on average of 30 days per month. using about 3 gallons per day. Now I ride my bike 15 days per month and use my jeep the other 15 using only 45 gallons per month. Cutting my gallons per month in half! Jeep is Awesome!
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Old 04-11-2012, 06:04 PM   #87
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i get 18-19mpg with my Gobi rack now installed. I also have 2.5 tf and stocker 32s
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Old 04-11-2012, 06:52 PM   #88
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15mpg, maybe 17-18 highway. Going easy or using supreme only helps 1 mpg.

I don't worry about it, don't baby it.

If I need to get mpg I'll ride my dual sport at nearly 100mpg. It's fun, just not as fun as the jeep.
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Old 04-11-2012, 08:26 PM   #89
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Quote:
Originally Posted by snikt View Post
12,000 miles average per year

Let's say Jeep gets 20mpg and the "2nd car" gets 30mpg

That's about 200gal per year difference which works out to ~$700-750.

That has to be an awfully cheap 2nd car for it to make sense to get one to try to save money

(and that's assuming you would drive the 2nd car 12,000 miles). Would probably realistically be like half, which would bring the money saved down even more
He said he saves $11 a day, if he drives the car 20 times a month that is $2640 annually.

I did almost the same thing but I don't save as much per day. As mentioned earlier, I am saving wear and tear on my Jeep. Not to knock Jeep, but I know my Toyota engine will have more trouble free miles than a Jeep. In fairness to my Jeep, it gets wheeled and will live a happy muddy rough life.

Another overlooked point is wear and maintenance is cheaper on the Toyota. Tires are half the price and last twice as long (generally speaking).

BTW, I get 18mpg for my 2010 Rubi, my Toyota gets over 38 mpg
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Old 04-11-2012, 08:36 PM   #90
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stock 2012 2d manual w 3.73. 1000 miles logged.
I'm getting 17.0 mpg in city only driving. (don't exceed 40MPH)... and I drive very light footed.

Couple of thoughts / questions... Do you get worse mpg while the engine is cold? My commute is only 2 miles one way. By the time i'm 3/4ths the way there in the morning, it completely warms up.

Second question:
Has anyone analyzed the mpg benefit (if any) for using ethanol free gasoline? There's an ethanol free gas station close to my house, but it's 15-20 cents more per gallon compared to a station that may contain up to 10% ethanol.

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