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12-20-2005, 12:01 AM
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Hummer Professional
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Join Date: Jul 2005
Location: WISCONSIN
Posts: 306
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14.5 Average.
I have the K&N CAI and SMA dual exhaust. Average speed on hwy 65-73MPH.
24 miles to work(one way), most is fwy time.
89 octane.
16700 miles.
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Victory Red, Auto,Lux, Cashm w/ eb interior, tow pkg, BFG all terr 285/75/16 incl. spare, black side step bars, SMA chrome hood handles, Kenwood DVD, K&N Air Intake, McCulloch 8000K H.I.D. headlights, Custom made 100% sheepskin seat covers, Dual DVD headrests,SMA dual exhaust,Roof marker lights.
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12-20-2005, 12:11 AM
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Join Date: Nov 2005
Posts: 43
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Is there a difference in the gas mileage between the 32 and 33 inch tires ?
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12-20-2005, 12:29 AM
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Hummer Veteran
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Join Date: Dec 2005
Location: Phoenix, AZ
Posts: 157
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I've keep track of fuel used since day one and have averaged 15.3 mpg during the last 12,500 miles. That includes 1000 miles of four wheeling with the rest being a mix of 50 / 50 street and highway. Oh yea...... I might exceed the speed limit from time to time and live in Phoenix so the A/C is on all the time.
My vehicle has the following options which may effect MPG:
Off Road Package, Auto, Roof Rails and I have raised the front about an inch.
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12-20-2005, 12:45 AM
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Join Date: Sep 2005
Location: West Palm Beach, FL
Posts: 141
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How do you figure out the milage? The computer does not give that?
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12-20-2005, 01:33 AM
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Hummer Veteran
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Join Date: Dec 2005
Location: Phoenix, AZ
Posts: 157
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Thought I would add high and low.
High 100% highway 20.6
Low mostly in town 13.7
Low 8.7 (all off road)
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12-20-2005, 02:43 AM
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Join Date: Dec 2005
Location: 818 area code
Posts: 12
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<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by WPBGUY:
How do you figure out the milage? The computer does not give that? </div></BLOCKQUOTE>
Well, for me I'll fill up the tank and set one of the trip odometers to zero. Drive until the "low fuel" light comes on. After I fill her up, I'll look at my mileage and calculate my MPG. Total miles driven/gallons put into the tank.
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12-20-2005, 03:11 AM
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Hummer Veteran
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Join Date: Jul 2005
Location: Panama City Beach, FL
Posts: 60
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5300 miles, Mobil 1 synthetic, 265 base tire at 35#. Flat and at speed limit..20.1 Hwy, 15.5 city.
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2006 White/Black Hummer H3
2001 Red/Oak Corvette Coupe
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12-20-2005, 08:56 AM
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Hummer Expert
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Join Date: Jul 2005
Location: Cheyenne, WY
Posts: 809
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<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by WPBGUY:
How do you figure out the milage? The computer does not give that? </div></BLOCKQUOTE>
Keep track of how much fuel you have put into the tank and then use the trip odometer to see how many miles you got out of that fill-up. It’s a little hard to be completely accurate, but here’s one method that is pretty close:
1. Go to a gas station, pick a pump.
2. Fill it up until the pump clicks off.
3. Reset the trip odometer to zero.
4. Have some fun
5. Go back to the exact same pump under similar conditions (~ same time of day, same outside temperature), fuel up again until it clicks off
6. Record the amount of fuel and record the miles on the trip odometer.
7. Do the math
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H3 Boulder Gray - 2006 Adventure|CD-MP3|XM|Roof Marker Lights|Husky Front Mudflaps|Brush Guard|Rocker Bars|UC Protection|U-Steps|Garmin GPS|Garvin Roof Rack|DVD Headrests|
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12-21-2005, 12:35 AM
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Join Date: Dec 2005
Location: 818 area code
Posts: 12
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My gas mileage under my "driving" habits = 13.5 mpg.
Ouch, that really hurts. |
12-21-2005, 02:44 AM
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Hummer Guru
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Join Date: Nov 2005
Location: rollin with Beebs & F5
Posts: 5,546
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<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by ketcat:
Thought I would add high and low.
High 100% highway 20.6
Low mostly in town 13.7
Low 8.7 (all off road) </div></BLOCKQUOTE>
hey ket good #'s are you running a hi psi ? I run mine on highway at 38-40 psi . got 21.4 coming back on 150 mile run 62mph -65mph just cruisen averaging 17 in town . tire rating is 50 psi [on sidewall] so before everyone slams hi psi's , tires will wear even . 38-40 psi will ride stiffer and a little more floaty over 75 mph , but if your commuting like i do and dont mind cruisen 65 its worth an extra 5 mpg and mine is an automatic . i have over 6k in miles now so well broken in also . I havent computed my offroad at 20 psi yet 
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GREEN no BLING , LINE-X & 35's , Adv. , monsoon & some other crap too 
Hangin with my HOABies , Bling is cool but HOABies RULE!!!!
Black Sheep Hummer Squadron / camp  no due's & no dont's 
* Rollin with the Banned and the Damned *
"Fred Thompson for President "
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12-21-2005, 04:50 AM
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Hummer Authority
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Join Date: Aug 2005
Location: On the Beach or at the River
Posts: 1,204
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NEOCON, if your getting over 21, Im going to adjust my pressure as well and try it. I also commute and could use the extra mileage. 10,000 miles and going strong.
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12-21-2005, 06:06 AM
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Join Date: Oct 2005
Location: So Cal
Posts: 50
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12 mpg for me. mostly city driving. also have true-flow air filter.
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Black, Lux, Off-road Package, chrome brush, black step bar, mud flaps
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12-21-2005, 11:26 AM
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Join Date: Oct 2005
Location: Tulsa, OKlahoma
Posts: 11
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We have 2 H3's. My wife's is yellow and mine is black. She's had hers 4 months (6000 miles) and said her best mileage was 22 and her worst was 16. Mine is 2 months old and only has 1400 miles on it (I split the driving between my CJ7 and the Hummer to keep the mileage down). I get 17 most of the time. We comute to Tulsa from the country about 33 miles one way so most of our driving is highway. I did the "torsion bar crank" thing on mine to gain 1 1/2" of lift in the front. I'm leaving hers alone until I see how it works out. Love those H3's.
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12-21-2005, 01:18 PM
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Hummer Veteran
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Join Date: Aug 2005
Location: chicagoland
Posts: 149
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man o man.....
i get about 200 miles from top off to low fuel light.
i have 35" superswampers on...
i knew my mileage was bad, but didnt think it was that bad.
now i know.
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12-21-2005, 01:32 PM
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Hummer Professional
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Join Date: Aug 2005
Location: Humble, Texas
Posts: 325
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<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by 818Guy:
My gas mileage under my "driving" habits = 13.5 mpg.
Ouch, that really hurts. </div></BLOCKQUOTE>
I've got just over 7000 miles now, have checked mileage on every fillup. Low has been just under 16, high has been 18. Mine is auto with adventure package.
I haven't done any offroading, my driving is probably about what you do, 70%HW/30%City. I drive a bit faster (73-75) on the highway (this is Texas after all).
I don't know how yours could be so bad. It does sound like there is quite a bit of variance among the people here. If this is going to be a primary decision criteria for you, the H3 may not be the right vehicle. You'll beat yourself up every time you fill up.
Me, I just have fun driving it and keep investing in the energy companies.
Good luck!
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2010 Red Rock Metallic H3. Just as cool as the first four Hummers I owned. Yeah, I have a problem.
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12-21-2005, 04:53 PM
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Join Date: Dec 2005
Location: 818 area code
Posts: 12
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HumbleAg,
That is what is killing me so much. The gas mileage. If it was around 15-16, the H3 would be in the mix for my next vehicle. Granted, I wish I would have checked the tire pressure before my "test."
The H3 is still in the running but fuel economy is one of the things I'm considering.
BTW, I live in Los Angeles.
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12-21-2005, 04:55 PM
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Join Date: Dec 2005
Location: 818 area code
Posts: 12
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Side note, when I was at the Hummer dealership the salesman said that a CAI and exhaust "will" improve mileage.
Any truth?
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12-21-2005, 06:34 PM
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Hummer Veteran
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Join Date: Oct 2005
Location: NC
Posts: 159
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I have almost 4K on mine and lately have 15.5 stop and go and 17.5 highway. It gets better with time, as I was averaging 13.5 and 16 before.
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Birch white, H3 adventure.
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12-21-2005, 11:37 PM
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Join Date: Dec 2005
Location: 818 area code
Posts: 12
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My current car, 2004 Mazda RX-8, had the similar situation. I was getting about 13 mpg mixed driving for the first 15k miles. Since then it's up to about 18 mixed. Currently I have 21000 miles on the car.
But that's where the H3 comes in. If I'm going to get 17-18 mpg with mixed driving, I might as well be driving an SUV just for the utility and room of it.
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12-22-2005, 07:07 PM
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Hummer Professional
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Join Date: Dec 2005
Location: virginia
Posts: 263
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I'm getting around 21 mpg. with the base, 5 speed manual
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