Pontiac G8 2008-09 & Chevrolet SS 2014+ LSX based RWD 4-door sedans

Real world g8 mpg?

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Old 04-18-2009, 04:57 PM
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Default Real world g8 mpg?

Trying to talk the lady into getting one. But she needs something with decent mpg. I think this is going to be the killer. What are yall getting real world
Old 04-18-2009, 06:35 PM
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my manual trans gxp averages around 16mpg. i have a really heavy foot though. thats mostly city driven. a lot of stop and go.
Old 04-18-2009, 07:52 PM
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I was getting only 15.9 on the GT before the maggie/tune. But like phoenix, I didn't baby it.

Now I get 19.7 thanks to the tune.
Old 04-18-2009, 08:11 PM
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i get 17-19 city AVG..

highway worst ive got is 23 and best is 29...
Old 04-19-2009, 02:55 PM
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I avg. 15mpg.

The DOD is only really worth it on the Interstate over a long trip. I get about 240 miles to a tank of gas. If I go on a trip, I can get up to 380
Old 04-19-2009, 04:24 PM
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my wifes seems to be getting about 21 with 60% city driving
Old 04-19-2009, 05:18 PM
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I get 14 in the city and 24 on the highway with the cruise on in my GXP.
Old 04-19-2009, 07:23 PM
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Wife gets about 23-24 w/ about 20% city driving so not bad for the power it has!
Old 04-20-2009, 05:28 AM
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With my mods I'm at 14.5 MPG city (only 3 miles to work, and I drive it like I stole it). On the road for a 5 hour road trip staying 75 MPH I averaged 25.8 MPG via the DIC, by calculations on fill up it was right at 25.3 so pretty close to accurate. I don't have DOD turned on because I'm getting ready to go with a bigger cam. I would assume that with the DOD turned on I could pull the 28 MPG people are pulling with Intake, tune and exhaust on other sites.
Tate
Old 04-20-2009, 08:19 AM
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Jesus people 14? Do you drag racing from light to light?

Bone stock I have been seeing 23-24 (mixed driving) and I dont baby it.
Old 04-22-2009, 09:54 PM
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20-21mpg for me 50% city driving.
Old 04-22-2009, 10:54 PM
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city 18 to 22 and high way 24 to 28 best was 28.4
Old 04-23-2009, 01:48 PM
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About 16.3 mpg all city stop and go driving. Haven't done the road trip in the car yet.
Old 04-24-2009, 09:47 AM
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I've been getting 20-21, with a lot of highway driving, but my wife takes the car once or twice a week and that is all city. Haven't gone on a long trip to see what all highway driving gets.
Old 04-24-2009, 10:06 AM
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The DOD is only really worth it on the Interstate over a long trip.
Not true. If you're driving "country roads" its worth even more, better mileage at 50-60mph than 70.

I average 19-21, I can see on highway 23-26.

In City/stop and go, you'll probably see around 17 mpg.

And the above is all about keeping your foot out of it. ;-)
Old 05-12-2009, 06:20 PM
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I am tank to tanking about 21-22 mpg on my gxp. On the highway I am getting 24.

My camaro got 27 on the highway.
Old 05-12-2009, 08:25 PM
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How big is the tank?
Old 05-12-2009, 09:36 PM
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19 gal
Old 05-12-2009, 09:59 PM
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Sorry, i'm new to the site, if you can't tell by my post count. I'm trying to decide between a 2010 Genesis cope, 2010 1SS Camaro, and a 2009 G8 GT.

Anyways, what the heck is this DOD I'm seeing you guys talk about? If you're getting 27+ mpg (highway), this might be the decision makes for me. I would love to have a V8 getting that kind of mpg. I do mainly highway driving.
Old 05-12-2009, 11:36 PM
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Nevermind, i figured it out.


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