Originally Posted by TGCOFTN

A lot of it depends on where you live, and how you drive. Those who live where its a lot of hills, and steep inclines, its only natural you wont get as good as fuel economy as someone who lives in northwestern Mississippi where its all flat land. On the hills, your engine is downshifting which is raising the rpms and using more fuel where as if your on flat level land, your staying in overdrive the whole time.

Some of us have heavy foots..........while others tend to drive like there is a egg under the gas pedal.

From my experience.........I use my 2008 H2 for over the road, and cruise at 60---64mph. It gets a steady 19 Miles Per Gallon driving this way. From my experience, I dont recommend the cruise control, cause when using the cruise control, it seems like it downshifts more going up the hills where as if your are using your foot, you can gently let off the pressure to keep it in overdrive.

I use my 2007 H2 for mainly local use ( driving Country Back Roads ) which I normally cruise at 50mph on. These roads are out in the middle of no where, with just fields, cows, horses, and trees, NO stopping and going at all. By driving like this, I have gotten as much as 19 miles per gallon with the 6.0 Liter.........but now that the stupid government as mandated all this ignorent ethenol in the gas.........NO vehicle gets good gas mileage now. So my 2007 normally gets around 15mpg give or take a little.

Again..........I cant stress this enough.......it all depends on HOW you drive, and what kind of land/city/town you live in. Someone who lives in a very populated area where its a lot of stop signs/red lights, traffic, your NOT gonna get the great of fuel economy.

I know I have shared this little story on here before, but before the government mandated all this stupid ethenol in our gas, I had a 2007 Cadillac Escalade with the 6.2 Liter in it, and believe it or not, got a whopping 24mpg with it. ( cruising at 60--64mph ) flat level land, country area, no red lights, no stop signs, all cruising. But in the everyday world........this is impossible.
But just wanted to share it with you all.

Proud owners of a
2007 Hummer H2 ( Yellow )
2008 Hummer H2 ( Solar Flare )

Originally Posted by Intercooled

I have never heard of any h2 owner even getting close to these numbers you suggest you are getting. Is your MPG computer reading correctly? The only time someone says we could get over 15 MPG is when they are thrying to sell us something.

Originally Posted by porschett

Don't know where you live, but if you drive 60 mph in Florida, you're going to get run over !!!!!!!

Originally Posted by Guinnessboy

already do both....sticking with shell gas as well, but 87 like the 6.0 is suppose to take.

Originally Posted by ZyBeR

I've converted my 06 SUV to E85 with a FlexFuel box. After a 600km highway drive I've average 10.2MPG on E85. That's 22" with grapplers, driving 50-70 mph.
On regular fuel I get around 13 MPG on highway driving.

All MPG numbers are calculated when re-fueling as the computers readings are way off.

Originally Posted by Vark

Are you eco friendly (no pun)? I mean e-85 is cheaper, but you use more of it and lose power, so it probably come out more expensive, right?
Well, there's no e-85 in florida anyway.

Originally Posted by Tex_h2

Not sure if this is good or bad gas mileage, you decide.

Originally Posted by Tex_h2

Not sure if this is good or bad gas mileage, you decide.