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06-18-2006, 02:22 AM
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Hummer Guru
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Join Date: Dec 2005
Location: In a FREE U.S.A. where Marxism, Socialism & Communism is not allowed !
Posts: 5,485
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Re: MPG 20 or not
You MIGHT get 20mph with a manual tranny, Highway ONLY or coasting downhill.
You will NEVER get it any other way. If you do a search of old posts about this there was a lot of discussion nad only one (1) BOZO claims to ger 20+ on a regular basic.
RYD
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06-18-2006, 02:24 AM
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Hummer Expert
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Join Date: Oct 2005
Location: Lebanon, PA
Posts: 723
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Re: MPG 20 or not
We managed to get between 21-23 on a highway trip, no mountains, at 60MPH. But there's no way you will get that as an overall average. And in 2007, there are .2 more litres of displacement, so that might lower the economy, or raise it. I have no clue.
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~2005 Stealth Gray H2 SUV.
~Wishing for an H1 to appear in the driveway some day... 
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06-18-2006, 02:34 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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Re: MPG 20 or not
i had also gotten over 21 with my auto but only on highway under 60 driving like a little old lady . 
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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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06-18-2006, 02:40 AM
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Hummer Veteran
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Join Date: May 2006
Posts: 71
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Re: MPG 20 or not
18mpg on the highway is doable with the auto. Anything this heavy in full time 4wd is not going to get great mileage. But if you check out other 4wd forums (Jeep) you're going to see that 18 mpg is not that bad.
Bottom line all vehicles are a compromise in one way or another.
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ShadowGreen H3, Adventure Pkg, Sunroof, Brush Guard, Rocker bars, U steps, Wilderness Rack, Husky mudflaps and more fun stuff to come.
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06-18-2006, 05:01 AM
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Hummer Veteran
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Join Date: Dec 2005
Location: Phoenix, AZ
Posts: 157
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Re: MPG 20 or not
I got 20.07 on one tank of mostly light down hill coming across CO and northern AZ. Normally I get 16 or 17 on the highway and 14 or 15 in town. Those figures were with the stock 33's. Now that I have 35's my mileage has gone down about 4% after adjusting for the speedometer being off due to the larger tires.
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06-18-2006, 11:10 AM
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Hummer Guru
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Join Date: Dec 2005
Location: In a FREE U.S.A. where Marxism, Socialism & Communism is not allowed !
Posts: 5,485
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Re: MPG 20 or not
mostly light down hill as you can see 20 average is impossible...
RYD
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REMEMBER
History, be it in 1 Year, 10 Years, a Hundred Years or One Thousand, will show that those people who voted for John McCain in the United States Presidental Election of 2008 were true patriots...
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06-18-2006, 04:30 PM
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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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Re: MPG 20 or not
Hello Webster,
I consistently do 20.3 mpg on the hwy. Now have 16K miles. Here are the parameters I have always posted: Automatic, 32" tires, 35# pressure(the door placard says 30# for 32" tires), Mobile 1 synthetic since 3000 miles, at speed limit, cruise control where possible, going 335 miles from Panama City, Fl to N Atlanta, Ga.(which is a flat run)and checked by actual fuel used upon arrival with no city driving!! So I cheerfully inform all H3 fans that GM has done a great job on posting accurate mpg figures!!!!!!!!!!
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2006 White/Black Hummer H3
2001 Red/Oak Corvette Coupe
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