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06-18-2006, 12:44 AM
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Hummer Veteran
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Join Date: May 2006
Location: Argyle
Posts: 28
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MPG 20 or not
Has anyone been getting 20MPG like advertised? I have a 2007 on order and was wondering if this really doe get 20 MPG on the highway. I have a 100 mile round trip commute to work, all highway. What have yall been getting?
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06-18-2006, 12:45 AM
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Hummer Veteran
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Join Date: Dec 2005
Location: New Mexico
Posts: 76
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Re: MPG 20 or not
about 16 highway and 13.5 city.
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06-18-2006, 01:03 AM
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Hummer Authority
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Join Date: Mar 2006
Location: Sacramento, CA
Posts: 1,075
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Re: MPG 20 or not
20 mpg is only on a manual
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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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~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
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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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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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06-18-2006, 05:50 PM
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Re: MPG 20 or not
19,000 miles on my H3 w/auto trannie and 18 is best mileage that I've seen. Usually get closer to 17mpg on the highway at 70-85mph.
S.
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06-18-2006, 06:27 PM
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Hummer Veteran
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Join Date: Jun 2006
Posts: 34
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Re: MPG 20 or not
During the break-in period -expect about 13 with mixed driving. At least that's what we are averaging.
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SeattleH3
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06-18-2006, 06:32 PM
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Hummer Guru
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Join Date: Apr 2005
Location: Orlando, FL
Posts: 6,358
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Re: MPG 20 or not
I have been averaging from mid 12s and 13s with mixed (mostly city) driving. My last tank was mid 14s at 4,750 miles and the usual driving. My MPG has slowly and steadily been going up as I near 5K miles.
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06-18-2006, 06:46 PM
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Hummer Guru
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Join Date: May 2006
Location: florida
Posts: 2,606
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Re: MPG 20 or not
I'm just over 5k now, and everytime I've filled up since I bought it, it's been around 16mpg*. This is almost all city and I still drive like it's a race car! Just the other day I took a 250 mile trip, stayed right around 90mph for most of it, and it came up to around 17 mpg*.
* Subject to approval by RYD
Last edited by dеiтайожни : 06-19-2006 at 03:48 AM.
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06-18-2006, 07:01 PM
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Hummer Guru
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Join Date: Apr 2005
Location: Orlando, FL
Posts: 6,358
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Re: MPG 20 or not
Quote:
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Originally Posted by dеiтайожни
I'm just over 5k now, and everytime I've filled up since I bought it, it's been around 16mpg. This is almost all city and I still drive like it's a race car!...
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That's because it's flatter in you part of town
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I don't care about the "Jeep thing" as long as my mail is on time!!!
Slate Blue H3 Adventure w/sunroof, Monsoon/NAV, DVD and marker lights
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06-18-2006, 07:14 PM
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Hummer Guru
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Join Date: May 2006
Location: florida
Posts: 2,606
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Re: MPG 20 or not
Quite possibly, and it's not like downtown with stop lights set to turn red when you get near them on every block. There is a lot of cruising at moderate speeds but it's still considered city!
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06-18-2006, 07:24 PM
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Hummer Authority
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Join Date: May 2006
Location: Upstate NY
Posts: 1,050
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Re: MPG 20 or not
Quote:
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Originally Posted by dеiтайожни
...stayed right around 90mph for most of it...
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Really? 90mph? Not 90kph? Wow!
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06-18-2006, 07:49 PM
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Hummer Guru
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Join Date: May 2006
Location: florida
Posts: 2,606
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Re: MPG 20 or not
Yes, I'd say about 200 miles of the trip was in the high 80s, just touching 90. The rest was 60-80. I was still getting passed too, it's crazy in that area, with my last car 100mph was normal. I took it easy on the h3, but there was really no difference between going 60 and 90, all felt the same.
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06-19-2006, 02:19 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
Quote:
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Originally Posted by dеiтайожни
I'm just over 5k now, and everytime I've filled up since I bought it, it's been around 16mpg. This is almost all city and I still drive like it's a race car! Just the other day I took a 250 mile trip, stayed right around 90mph for most of it, and it came up to around 17 mpg.
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and I bet you have a bridge to sell also ...
Sorry fellow Floridan, I don't buy it ...
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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