07 vs 08 Models
#11
10-14-2007 | 12:41 AM
Joined: Dec 2006
Posts: 219
From:
RE: 07 vs 08 Models
ORIGINAL: Muddydawg75
you're only doing 70 on the GSP??? I'm doing that on the entrance ramp....
you're only doing 70 on the GSP??? I'm doing that on the entrance ramp....
]I will endeavor to persevere and put the pedal to the metal ...I did mention that I dothat in reverse ! Yeah ... that's the ticket - in reverse !
[IMG]local://upfiles/1471/C1CD87FECA69415FB93232DCB5694394.jpg[/IMG]
#15
10-15-2007 | 09:31 AM
Super Moderator
Joined: Jul 2007
Posts: 12,491
From: Boat Town USA MI
RE: 07 vs 08 Models
It's the new silver nose on the 08s. The wind gets boondoggled by the silver paint causing a low pressure swirl up under the fenderwells and additional underbody drag coefficients defeating earlier mileage gains. 
Or, they changed mpg measurement. Take your pick. 
Or, they changed mpg measurement. Take your pick.
#16
10-28-2007 | 12:01 PM
Senior Member
Joined: Oct 2007
Posts: 4,547
From: Delaware, Ohio GO BUCKS!
RE: 07 vs 08 Models
I have been tracking my MPG on my 07 and I have to say that it has always fit the 14-18 MPG better than the other. Haven't checked the wifes 08 yet though. You are only talking about 1 MPG difference either way though. People rag on me all of the time about it and I just tell them that I didn't walk into the Hummer Dealership thinking alot about gas mileage.
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