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Old 01-05-2011, 10:19 PM   #1
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2009 X mpg

I was just wondering about the mpg's that some of you guys are getting. My '09 X is showing me at the MOST 11.9 mpg on my dash readout. I really was thinking that this would be higher...(and dont get me wrong, I would drive this sucka if it only got 5 mpg!!). Is there anything that can be done to boost the mpg on my baby?

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Old 01-05-2011, 10:26 PM   #2
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Are you going by the computer readout? Have you ever reset it? Next time you fill up keep track of how many miles you drive until the next fill up. Then divide the number of gallons you put back in by the miles driven.

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Old 01-05-2011, 10:49 PM   #3
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Originally Posted by daggo66 View Post
Are you going by the computer readout? Have you ever reset it? Next time you fill up keep track of how many miles you drive until the next fill up. Then divide the number of gallons you put back in by the miles driven.
yeah daggo...I'm going by the computer readout. Actually I was wondering about the accuracy of that?...hmmm. Because when I first started watching it, it started at 7.0mpg and slowly crept up to almost 12mpg I've never reset it. And honestly I dont know how to reset it. Hell, does it ever read the mpg that you are actually getting on a daily drive? I filled her up the other day and for sure will calc the mpg next time I empty the tank out....THANKS!
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Old 01-05-2011, 10:59 PM   #4
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yeah daggo...I'm going by the computer readout. Actually I was wondering about the accuracy of that?...hmmm. Because when I first started watching it, it started at 7.0mpg and slowly crept up to almost 12mpg I've never reset it. And honestly I dont know how to reset it. Hell, does it ever read the mpg that you are actually getting on a daily drive? I filled her up the other day and for sure will calc the mpg next time I empty the tank out....THANKS!
It's an estimate, not completely accurate. It's closer if you reset it by holding the button in until it blanks out after you refill the tank.
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Old 01-06-2011, 12:00 AM   #5
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That mpg seems really low. I average around 16-17 mpg (calculated at fill up). My computer is fairly accurate staying at right around 17. Do you drive a manual or automatic? I feel that with driving a stick you can increase your fuel efficiency by controlling the shift points.
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Old 01-06-2011, 01:16 AM   #6
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I just got my 11 Rubi a few weeks ago. Its a stick and the best I done driving 20 mils to work is 16.9. I expect it would be a little better if I was driving all freeway miles?

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Old 01-06-2011, 06:48 AM   #7
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I still suspect that Gearing and Tires have more to do with the wild differences in MPG Jeepers post here. I have seen posts range from 11 to 22, and can't figure it out.

I have a 2009 JKU X, and I live between 16 and 17.
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Old 01-06-2011, 07:08 AM   #8
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I got just about 21mpg on a 350 mile highway trip back in Early December. This was on winter blend gas and my 2010 only had 4000 miles or so on it. This was done by my own calculation, not the computer.
10 minutes back and forth to work every day and I'm getting about 17mpg.
2010 2 door with an auto and 3.73 gear.
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Old 01-06-2011, 07:18 AM   #9
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2010 Wrangler 2 door, 6 speed manual, soft top getting 19.5 in city and over 21 on highway BUT I'm running wrangler SR-A tires on alloy wheels and I'm very light on the skinny pedal. 12mpg is very low without some seriously big tires and or a lift and other mods.
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Old 01-06-2011, 07:52 AM   #10
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I get 18.5 mpg most of the time.. but haven't been below 17 mpg..
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Old 01-06-2011, 08:55 AM   #11
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2010 Wrangler 2 door, 6 speed manual, soft top getting 19.5 in city and over 21 on highway BUT I'm running wrangler SR-A tires on alloy wheels and I'm very light on the skinny pedal. 12mpg is very low without some seriously big tires and or a lift and other mods.
Wow, I'm running the same tires on stock 17 rims. It really seems that my mpg should be a lot higher, and I'm way light on the skinny pedal too. My jeep is practially new (9000 miles), I bought it used and as far as I can tell, no mods.
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Old 01-06-2011, 09:05 AM   #12
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light on the gas doesn't necessarily mean good gas mileage. you want to focus more on steady application of throttle. no quick starts, no on and off the gas. pick a speed and maintain it. contol your speed with a steady foot, not constant on the gas, off the gas. don't be afraid to downshift, either. sometimes lugging your engine at low rpm is worse for mileage than letting it downshift.

if you've ever ridden with one of those people who is constantly on and off the gas pedal, ask them what kind of mileage they get if they pay attention to it.
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Old 01-06-2011, 09:17 AM   #13
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I drive mostly highway miles. I never reset the mpg display. When I traded in the 2007 Wrangler, the readout was 20.2 mpg over 47000+ miles. On my 2011, I have 1350 miles. Same procedure, never reset. This morning, the mpg is at 20.5. When I have towed a trailer with either JK, the mpg average will drop down to around 15 but over time resume its 20+ average.

The 2007 had 4.10 gears and the 2011 has 3.73. Both were automatic.
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Old 01-06-2011, 09:22 AM   #14
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I have an 09 X 4-dr. I usually average 15-16 mpg but the past few weeks it's been holding pretty steady at 17.3, which is the highest I've ever seen it. I didn't know you could reset the computer by holding the button. I'll definitely do that and see how accurate it is. Thanks for the tip guys.
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Old 01-06-2011, 09:31 AM   #15
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I have an 2009 unlimited, 6 speed and everything is stock. I got it with 22k miles and have put about 4k and am averaging 16.5-18.5 on the computer estimate. One thing I've noticed is that if you let your car run in the morning to warm up on really cold days it totally throws the computer estimates off. Not sure why that is, but when we had a really cold streak a couple of weeks ago I let the car warm up several times and the estimated mpg was down around 12 or 13, but in reality when I filled it up and did the manual calculations they were still 17.
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Old 01-06-2011, 09:47 AM   #16
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Quote:
Originally Posted by tommyb View Post
Wow, I'm running the same tires on stock 17 rims. It really seems that my mpg should be a lot higher, and I'm way light on the skinny pedal too. My jeep is practially new (9000 miles), I bought it used and as far as I can tell, no mods.
Are you running an auto with 3.73? Or a manual with 3.21? You should be getting closer to 20mpg. average with the later and stock. BTW...Welcome to the Forum!
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Old 01-06-2011, 09:59 AM   #17
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18-19 MPG highway as per the confuser, have not checked by hand, not a great concern hence getting the Jeep, usually not much past 3,200 rpm, easy on the one on the right side. That's with 1,500 miles on the clock,,,
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Old 01-06-2011, 10:16 AM   #18
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Uh I have a 09 Wrangler X and I dont have a computer read out..
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Old 01-06-2011, 11:12 AM   #19
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Originally Posted by Mr. Sinister View Post
light on the gas doesn't necessarily mean good gas mileage. you want to focus more on steady application of throttle. no quick starts, no on and off the gas. pick a speed and maintain it. contol your speed with a steady foot, not constant on the gas, off the gas. don't be afraid to downshift, either. sometimes lugging your engine at low rpm is worse for mileage than letting it downshift.

if you've ever ridden with one of those people who is constantly on and off the gas pedal, ask them what kind of mileage they get if they pay attention to it.
I have an 08 Sahara auto. Driving to the cabin (144 miles) the first 100 is flatland and freeway and I use cruise. @ 65 it'll give me as high as 21 unless there's a headwind but normally drive 75 - 80 on cruise and it drops down to 18. When I start the climb I kick it out of overdrive and on the steeper hills I will shift to 2nd instead of waiting for it to shift down and I get as low as 14. I reset the mileage and mpg every fill-up.

I also have a 98Tj 3 speed auto that stays at the cabin during the summer. With 35 miles of trail riding and the trip home it got 13.5 mph. If I had cruise on the TJ it probably would give me a little better mileage.

My wife won't use cruise and never gets the mileage I get.
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Old 01-06-2011, 11:47 AM   #20
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Are you running an auto with 3.73? Or a manual with 3.21? You should be getting closer to 20mpg. average with the later and stock. BTW...Welcome to the Forum!
Auto with the 3.73.....and this forum is the best read I've ever done!! Everyone on here seems like great people. Screw facebook...haha
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Old 01-06-2011, 11:51 AM   #21
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Uh I have a 09 Wrangler X and I dont have a computer read out..
Jeremy, try hitting the little black button on the left side of your dash. I didn't know that mine had all the options until about 4 days ago. It will swich from mpg, to compas, to something else, and so on and so on and so on. Thats when I discovered my crappy mpg. ughhhh.
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Old 01-06-2011, 12:12 PM   #22
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I have a 2010 that when I got it, it was getting 17-18 in the city (small city) and 18-19.5 on the hwy. After getting the new heavier bumper and winch, I lost about one mpg. My computer shows around an average of 16.7 at the moment around town.

Are you running bigger tires btw? They make a huge difference in MPG's especially muds and many A/t's. A larger mud tire will cost you
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Old 01-06-2011, 12:20 PM   #23
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I have a 2010 that when I got it, it was getting 17-18 in the city (small city) and 18-19.5 on the hwy. After getting the new heavier bumper and winch, I lost about one mpg. My computer shows around an average of 16.7 at the moment around town.

Are you running bigger tires btw? They make a huge difference in MPG's especially muds and many A/t's. A larger mud tire will cost you
I'm running Stock GY Wranglers, on 17" Rubi rims...I'm thinking that reseting the mpg thingy after I empty the tank might do the trick...I'll keep ya posted...thanks for all the tips!
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Old 01-07-2011, 09:46 AM   #24
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tommyb,

Yeah i guess the previous owner of my jeep didnt buy that option. That part of my dash is blank. I don't have a compass there. Oh well.
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Old 01-07-2011, 11:17 PM   #25
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filled her up today and reset the mpg display, took it to work, .....avg mpg never got over 13 mpg...man I dont know what's going on, but with the expected gas prices going up, i'm gonna have to start drinking some cheap ass beer.
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Old 01-08-2011, 06:22 AM   #26
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You'll have to do it the ole fashioned way, fill up and do the mileage calculations on the next fill to be sure. Man...don't skimp on the beer! Baloney sandwiches ain't bad!
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Old 01-08-2011, 07:09 AM   #27
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Uh I have a 09 Wrangler X and I dont have a computer read out..

I didn't have it in my 09 X either. Then one day I was re-setting the compass and there it was. I'm pretty sure it got added somehow when they did a flash update to add Uconnect.
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Old 01-08-2011, 07:34 AM   #28
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My '09 X was running about 15ish while it had the SRAs on it...then I switched to BFG Rubi take offs and I see 13mpg around town now. MUCH more rolling resistance to these tires. I wouldn't switch back but, everything good comes at a price!
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Old 01-08-2011, 04:54 PM   #29
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"Jeeps are bricks on wheels"...as said in reference to Wrangler mpg's. Oh, how true! Saw that on one of the forums so I can't claim credit. Jeeps are not made for fuel economy. If saving at the pump is an issue than get a sedan.
I've had 4 of them starting with dead stock & now an 09 Rubicon heavily modified. Obviously the mpg's went lower as the Jeep got higher but it's not a complaint because I know that going in. I'm not commenting to be sarcastic. I just know that no matter if it's stock or modified it's not the most economic gas mileage choice I could have made. But it's a choice none the less and as a loyal Jeeper it's very small price to pay
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Old 01-08-2011, 05:17 PM   #30
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I get 20-22 Highway 15-17 city 6spd 3.21 gears stock 17" wheels. I dont think its that bad

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