How many miles per gallon in your JK?
06-16-2011, 05:13 AM
#41
JK Freak
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2 dr stock mountain edition. Average about 16 city and 22 hwy. that is using the speedo milage indicator. More than likely not accurate. The best I saw, was 26 mpg driving 110 kmph/ 70 mph.
You can call BS all you want. My milage goes for s#*t when I stomp on the gas, so I tend to drive it like I didnt steal it.
You can call BS all you want. My milage goes for s#*t when I stomp on the gas, so I tend to drive it like I didnt steal it.
06-16-2011, 05:32 AM
#42
JK Freak
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2011 2dr 6 speed sport when it was stock with 3.21 gears i most i got was 23 mpg i usually averaged around 20-21
now with 35's and 4.88 gears the most i got was 18.4 mpg on a trip but that was loaded down with gear and 3 dogs but i average around town 16-17 mpg and thats only if i can keep my foot out of it
now with 35's and 4.88 gears the most i got was 18.4 mpg on a trip but that was loaded down with gear and 3 dogs but i average around town 16-17 mpg and thats only if i can keep my foot out of it
06-16-2011, 05:50 AM
#43
JK Freak
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2011 stock 2dr sahara. I get about 18-19 mpg with a 60 mile round trip drive to work everyday, mostly highway. That sure beats my 01 TJ. Gas is only 3.45 here in NE PA. so that helps. Doesn't really matter what the cost of gas is, though, wouldn't trade my jeep in for a prius EVER.
06-16-2011, 07:36 AM
#46
JK Enthusiast
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Mpg
On our recent trip to Carova Beach NC from Lynch station VA which is 300 miles plus driving around on the beach, I averaged 13 MPG.
Oh and my wife tried to take everything in the house with us. That thing was loaded down. I left home with 25 psi of air pressure in the tires, but it was handling kind of squirrely. Swaying back and forth, so I had to stop in Appomatox and pump them up to 35 psi. Much better!
Oh and my wife tried to take everything in the house with us. That thing was loaded down. I left home with 25 psi of air pressure in the tires, but it was handling kind of squirrely. Swaying back and forth, so I had to stop in Appomatox and pump them up to 35 psi. Much better!
06-16-2011, 07:57 AM
#48
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Originally Posted by D_engel
2 Door 6 speed
4.10's
35's
2.5" Lift
87 octane (No tune)
17.9 mpg Average in cool weather ( No AC)
15.9 mpg Average in hot weather ( AC blasting)
Hope this helps
4.10's
35's
2.5" Lift
87 octane (No tune)
17.9 mpg Average in cool weather ( No AC)
15.9 mpg Average in hot weather ( AC blasting)
Hope this helps
06-16-2011, 09:14 AM
#49
JK Junkie
If you can't tell by what I have below, I am an engineer and am kind of anal about these things...
2011 Stock Rubicon JKU:
4 fill-ups, mean calculated = 17.52MPG, Standard deviation of 0.4MPG
2011 Rubicon JKU, Rancho 4" short arm lift, coast front driveshaft, 35x12.5 KM2's, Banks intake, Dynomax exhaust, AEV Procal to fix tire diameter in calibration:
All driving conditions including wheeling and tops/doors off
12 fill-ups, mean calculated = 15.38MPG, Standard deviation of 1.16MPG
Removed wheeling trips from the previous calculation
11 fill-ups, mean calculated = 15.60MPG, Standard deviation of 0.92MPG
Removed wheeling trips and tops/doors off from previous calculations
9 fill-ups, mean calculated = 16.02MPG, Standard deviation of 0.64MPG
So, some conclusions...
Ovarall if you include all kinds of driving situations, I lost a little over 2MPG with lift. But, I don't think that is fair because when you wheel you know your MPG is going to suck but you don't care because that is not what you are there for. Therefore, if you remove wheeling trips, I only lost a hair under 2MPG. And last but not least, I have found that topless/doorless causes increased aerodynamic drag (however I would like more data points to prove this), so if you compare apples to apples (pre lift with top always on and no wheeling to post lift with top on and and no wheeling), you can see that I only lost about 1.5 MPG.
Also, you can see from the standard deviation numbers that the off road and topless/doorless pushes the calculated MPG's farther away from that mean line for the individual data points (scatter), which reinforces my my last apples to apples comparison (the standard deviations are pretty close). Also, it should tell you that if you want consistent fuel economy, keep the top and doors on and don't wheel. But who wants to do that right?
2011 Stock Rubicon JKU:
4 fill-ups, mean calculated = 17.52MPG, Standard deviation of 0.4MPG
2011 Rubicon JKU, Rancho 4" short arm lift, coast front driveshaft, 35x12.5 KM2's, Banks intake, Dynomax exhaust, AEV Procal to fix tire diameter in calibration:
All driving conditions including wheeling and tops/doors off
12 fill-ups, mean calculated = 15.38MPG, Standard deviation of 1.16MPG
Removed wheeling trips from the previous calculation
11 fill-ups, mean calculated = 15.60MPG, Standard deviation of 0.92MPG
Removed wheeling trips and tops/doors off from previous calculations
9 fill-ups, mean calculated = 16.02MPG, Standard deviation of 0.64MPG
So, some conclusions...
Ovarall if you include all kinds of driving situations, I lost a little over 2MPG with lift. But, I don't think that is fair because when you wheel you know your MPG is going to suck but you don't care because that is not what you are there for. Therefore, if you remove wheeling trips, I only lost a hair under 2MPG. And last but not least, I have found that topless/doorless causes increased aerodynamic drag (however I would like more data points to prove this), so if you compare apples to apples (pre lift with top always on and no wheeling to post lift with top on and and no wheeling), you can see that I only lost about 1.5 MPG.
Also, you can see from the standard deviation numbers that the off road and topless/doorless pushes the calculated MPG's farther away from that mean line for the individual data points (scatter), which reinforces my my last apples to apples comparison (the standard deviations are pretty close). Also, it should tell you that if you want consistent fuel economy, keep the top and doors on and don't wheel. But who wants to do that right?
I filled up and divided miles by gallons one time. Then I checked my computer to compare.
I wonder which mods cause the greatest drop in MPG? And which add the most MPH. For example, I lifted the jeep 4.5" and added 37" tires. Gas went from 16 to less than 10. I added a rear 60 - no change. I added 38's and 1" more lift, gas mileage went up about 1mpg! I added a D60 up front (manual hubs) which weighed about 300 lbs more than my D44 and my mileage went up about 2 mpg. I added a superchip program and my mileage is now in the 13.6-14.0 range on road.
I know that which tire you run can make a difference of up to 2 mpg. If you're looking for Krawlers - expect a serious drop in mileage (I have them on my TJ).