16-18 mpg on the freeway!?? Was someone towing you?! LOL!

 

Hey im getting about 18.3 MPG right now in my H2

 

Either you can't add, or your trip computer is broken.

You are NOT getting 18 mpg, no matter what you say.
Pure rubbish.

Wait, maybe you measured it going downhill, in which case 18 is entirely possible.

FYI: I got 15 on a Canadian gallon at the best cruising speed, averaged over 600 miles, mostly on cruise control, babying the new H2 all the way home.

Now that was the best these beasts do. On a tiny US gallon, you can't do better than about 13 on the highway. Again, you have to average up and downhill.

I challenge you to prove your claim!

 

Florida - no hills - 14.9 @ 70 mph highway. 12.7 City. '06 stock.

 

I installed Cold Air Intake, Magnaflow Exhaust, and removed crossbars, spare tire & jack/jack accessories. At best I get 15.5MPG.

 

I averaged 16.3 once on a 30 mile trip @45mph. other than that one time, I'm happy if I can average 13.5

 

Ypou could always siphon gas out of priuses

 

save money on gas by buying a motorcycle, it cost me $11 bucks today to fill my beast up haha, and it'll last me all week.

if i were wanting to conserve on my h2 i'd take any unnecessary weight off, racks, sparetire, 3rd row seat, excess stuff. not that it'd make that much of a difference, but it'd help more than it'd hurt.

 

all we need to do is make a convertible conversion, remove the tire, remove every seat but yours, take off the steel bumpers and replace them with carbon fibre i garuntee gas mileage will improve some then

 

Try this. I am,
http://www.car-stuff.com/hummerperformancechip.htm