Recently purchased 2014 Unlimited Sahara fuel efficiency - JeepForum.com
 
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post #1 of 14 Old 10-14-2021, 01:30 PM Thread Starter
sarahm73
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Recently purchased 2014 Unlimited Sahara fuel efficiency

Hey there! So after much coveting, I finally purchased a 2014 Unlimited Sahara (51k miles) I had initially planned on getting a newer Sport model and had prepared myself for the fuel consumption (previously drove a Subaru that I’d fill about once a month vs every 10 days with the jeep). Fell in love with the Sahara and purchased it. Not sure why but I’m averaging 12.5 ish per gallon which is obviously a world away from a Subaru but also from what my research had prepared me for. I mostly drive in the city but even highway efficiency is WAY lower than it should be (14 ish per gallon). I’ve been recording the mileage between fills and I’m getting about 200-220 to a tank. I know I’m probably going to get yelled at and told to buy a Prius but I’m just concerned that there’s a bigger issue here. I currently have the soft top on, have used a fuel cleaner, have new tires. Any other suggestions on what could be the issue? I absolutely adore this car but I’ve heard mileage gets worse in winter so I need to figure this out fast. Thanks in advance!

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post #2 of 14 Old 10-14-2021, 02:46 PM
JoonHoss
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Is it all stock, or lifted/ bigger wheels and tires?

Hoss

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post #3 of 14 Old 10-14-2021, 05:14 PM
Kruzin
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Yep. This question gets asked ALL the time, and it's almost always because the Jeep has larger than stock tires.
Wranglers are extremely customizable...but most of the things you customize reduce your fuel mileage.

'09 JK Rubicon
'01 XJ Sport
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post #4 of 14 Old 10-15-2021, 06:11 PM Thread Starter
sarahm73
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Thanks for responding! Nope, to tires and lift. Doesn’t seem to have been customized. I thought myself that the tires were bigger but I checked them against the thing inside the door.
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post #5 of 14 Old 10-15-2021, 06:17 PM
JoonHoss
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So honestly, your mileage seems within normal range.

I say that with a bit of clarification; I can easily only avg right about 13 mpg driving back and forth to work, which is basically in town (especially with hills and traffic )

I can also average about 17-18 on the fwy, even up to 20 if I really, REALLY try and mind my driving... HOWEVER, I can also pretty easily only manage 15 or so on the freeway if I drive hard or aggressively, or if there's traffic.

About the only other thing you can Check is your tire pressure, but it doesn't sound completely out of normal range.

One other thought, did you go with a mud terrain tire? Or a road tire?

Hoss

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post #6 of 14 Old 10-16-2021, 07:55 AM
metalhead
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Nobody buys a jeep for gas mileage. The only jeep I owned that got good gas mileage was a 2008 patriot. I could get 18 to 20 mpg in town and 23mpg on the highway. If you want good gas mileage in a wrangler you have to drive it like an old lady and who wants to do that. I stopped worrying about gas mileage long ago. If the check engine light is not on, the engine sounds good, and it drives good then there shouldn't be any problems to worry about.

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2000 Grand Cherokee WJ (Gone)
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post #7 of 14 Old 10-16-2021, 07:11 PM Thread Starter
sarahm73
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Ha! Don’t old ladies drive slow? I find that my mileage increases (slightly) if I’m driving faster. Thanks for taking the time to respond, I definitely appreciate it. I haven’t checked the tire pressure so maybe there’s a sliver of hope that I can increase it slightly! 🤞
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post #8 of 14 Old 10-17-2021, 06:50 PM
Agent 000
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Just to throw in my $.02 worth... my 2014 Sport Freedom Edition averages about 22 mpg on the highway, and about 17 to 18 mpg around town. Now, mine is a 2-door, with a 6-Speed manual transmission, running on 255/75-17 tires.

Billet Silver 2014 Jeep Wrangler Sport Freedom Edition

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post #9 of 14 Old 10-17-2021, 08:31 PM
justals
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I have a 2016 Sahara jku with auto trans which daughter drives and she averages 18.6. I have a 2014 rubi with 6spd and average 18. Sahara is in socal and rubi in norcal. Different traffic patterns and drivers but still very close with per gallon miles

85 CJ-Renegade; 85 CJ-Base; 86 CJ-Laredo;
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post #10 of 14 Old 10-18-2021, 10:46 AM Thread Starter
sarahm73
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See, I was expecting closer to 18city/22highway. Mine is a 4 door. I think the Rubicon has a slightly higher curb weight, if I’m not mistaken?
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post #11 of 14 Old 10-18-2021, 10:09 PM
nenovster
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Have you checked the air filter? Have you clocked your speed using a GPS app?

I get about 18-19 in the city - 2013 Sport, 2 door (but driving doorless ), manual, 275/65R18 tires
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post #12 of 14 Old 10-18-2021, 10:55 PM
Agent 000
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The biggest things that rob the Rubicons of fuel mileage are the tires... normally mud-terrain tires, not the smoothest rolling on the highway.... and the gear ratio, normally 4.10 gears, great for low speed torque, but not the greatest for fuel economy. And yes, the Rubicon JK's do weigh more, due to standard skid plates, D-44 front axle, and other parts that make it a Rubicon.

Billet Silver 2014 Jeep Wrangler Sport Freedom Edition

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Last edited by Agent 000; 10-27-2021 at 11:37 PM.
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post #13 of 14 Old 10-27-2021, 02:48 PM
Bassman7365
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Our 2007 X was only getting 15 mpg and after a simple oil change and intake air filter replacement I was able to boost it up to 17.5 mpg. Read somewhere it should be getting 18 to 20, but I don't know if that's achievable, in the real world. The tire pressure suggestion was good, too. But, I'll assume you've got that covered.
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post #14 of 14 Old 10-29-2021, 08:06 AM
Spike6901
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For reference, on my '17 sport JKU with a 3" lift and 35's, 3.73 gears, 3.6L, I get about 13.5 around town, 15-16 on the highway.

Suggestions:
Verify you still have the air dam under the front and add aftermarket hood latches to reduce hood lift and flutter. I have found this is almost 1mpg.
Change all fluids with new synthetic, add a K&N or equal drop in filter, consider a Pedal Commander to control your throttle input. As mentioned, I find I get a little better fuel economy by moderate acceleration rather than the geezer glide.
Aggressive AT or MT tires will also reduce economy if that is your goal. The tread design and un-sprung weight are a factor.

'17 JKU: 3" lift, 35's, armor, flat towable
'21 Power Wagon on 35's
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