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10-15-2007, 12:35 PM
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Hummer Guru
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Join Date: Dec 2006
Posts: 2,195
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Re: MPG differences between H3/Alpha?
First off its an I-5 not a V-5. And besides that who knows how they do their testing, the best testing is the on that YOU get when you drive the car becuase every person drives differently. I know the sticker on the I-5 is 14-19 MPG where as when i saw the alpha at the dealer it says 13-16 (or 17). I would say the sticker is pretty accurate considering most of my driving is not on the highway and i get 15 MPG
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2003 H1 HMCS: Ocean Blue Metallic, Grey Leather Interior
2010 H3 Alpha: Canyon Metallic, Cashmere Interior
2017 VW Jetta S
2012 Cessna 182T Skylane
used to have: 2007 base H3 Slate Blue
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10-15-2007, 08:49 PM
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Hummer Professional
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Join Date: Oct 2005
Location: Cabo San Lucas, Mex
Posts: 331
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Re: MPG differences between H3/Alpha?
i have the 2006 I5 and consistently get 13-15 mpg.
i do mostly non highway driving, but commute 5 miles daily.
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10-15-2007, 10:42 PM
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Hummer Veteran
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Join Date: Sep 2007
Location: Middle Georgia
Posts: 47
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Re: MPG differences between H3/Alpha?
Recently picked up a nice Alpha, 17.5 mpg so far consistantly. Mostly highway driven.
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2008 Black H3 Alpha, Lux Pkg, 33" MTZ's
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10-15-2007, 11:01 PM
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Hummer Guru
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Join Date: Dec 2006
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Re: MPG differences between H3/Alpha?
Quote:
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Originally Posted by lance-n
i have the 2006 I5 and consistently get 13-15 mpg.
i do mostly non highway driving, but commute 5 miles daily.
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the "06's are supposed to get 15-20 MPG where as the "007-later are supposed to get 14-19MPG due to the .2 litre increase in the engine and the 22 added horsepower
__________________
2003 H1 HMCS: Ocean Blue Metallic, Grey Leather Interior
2010 H3 Alpha: Canyon Metallic, Cashmere Interior
2017 VW Jetta S
2012 Cessna 182T Skylane
used to have: 2007 base H3 Slate Blue
/''T''|[___|___]
[---T--L -OlllllllO-]
()_)"""()_)/"**"\)_)
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10-15-2007, 11:11 PM
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Hummer Guru
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Join Date: Jul 2006
Location: Stouts Creek
Posts: 4,192
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Re: MPG differences between H3/Alpha?
My 06 I5 3.5 avg. 17mpg. With the archaic 4 speed auto...
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10-15-2007, 11:56 PM
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Hummer Veteran
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Join Date: Oct 2007
Posts: 51
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Re: MPG differences between H3/Alpha?
Does anyone with the Alpha have their average mpg results? I might even go for the alpha now, it seems the power will not affect mpg?
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10-21-2007, 12:44 AM
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Hummer Veteran
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Join Date: Oct 2007
Posts: 51
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Re: MPG differences between H3/Alpha?
Quote:
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Originally Posted by mkaresh
Yes, it can. Fuel economy sometimes improves with a torquier engine because it doesn't have to work as hard. I wouldn't be surprised if the V8 got better fuel economy for some people.
The big problem with buying the V8 is that GM currently only offers it in fully loaded Alpha trim. So, unless you wanted all the Alpha standard equipment anyway, there's a large price difference.
My site has a fairly sophisticated "real world" Fuel Economy Survey. Results for the H3 here:
Hummer H3 fuel economy
None for the Alpha yet. Any Alpha owners here? If so, I hope you'll consider signing up and participating. |
I was going to go for the lux package anyways, so the difference is about 4k between that and the alpha. |
10-23-2007, 07:55 PM
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Elcova Newbie
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Join Date: Apr 2007
Posts: 2
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Re: MPG differences between H3/Alpha?
The other problem is that they changed the calculation formula for the estimated MPG I think starting this model year ('08) which adjusts almost every vehicle down. If I find the details of the change, I'll post it.
Update: Just found it on Edmunds:
Edmunds.com: EPA Overhauls Fuel Economy Estimates for 2008
Last edited by SpeedNut : 10-23-2007 at 07:59 PM.
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10-23-2007, 09:29 PM
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Hummer Veteran
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Join Date: Feb 2007
Location: Houston (The Heights)Texas <'))))>?{ . N 29.47.89 W 95.25.71
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Re: MPG differences between H3/Alpha?
I have been thinking about this issue as well.
I'd almost bet that the final-drive gearing combination of the V-8 and 35" tires would give the best highway mileage, and comparable city mileage to the other drivetrain/tire combinations. 
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10-23-2007, 10:58 PM
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Hummer Veteran
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Join Date: Oct 2007
Posts: 51
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Re: MPG differences between H3/Alpha?
So you think bigger wheels will get better mileage?
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10-23-2007, 11:19 PM
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Hummer Guru
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Join Date: Dec 2006
Posts: 2,195
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Re: MPG differences between H3/Alpha?
i think he was being sarcastic
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2003 H1 HMCS: Ocean Blue Metallic, Grey Leather Interior
2010 H3 Alpha: Canyon Metallic, Cashmere Interior
2017 VW Jetta S
2012 Cessna 182T Skylane
used to have: 2007 base H3 Slate Blue
/''T''|[___|___]
[---T--L -OlllllllO-]
()_)"""()_)/"**"\)_)
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MPG differences between H3/Alpha?
