Gas mileage

[tyler1bo]

This may be a really dumb question, but is any H2 owners actually getting decent gas mileage? I realize adding wheels and tires will affect it but I'm just curious as to what everybody else had.

Thanks
Austin

[guruerror]

37" tires, 4.56 gears, aftermarket headers/exhaust, performance tune: 11.3 in winter, 11.7 in summer.

It was about the same when it was stock.

[tyler1bo]

I think I just need a few performance parts so it doesn't have to work so hard. It sucks that GM put this massive engine in this extremely heavy ride and it has hardly any horsepower, as opposed to what it could really produce.

[PaHumBug]

2005, 37" tires, 6 inch fabtech lift, cold air intake, superflow exhaust, 10.2 mpg

[tyler1bo]

I looked at mine today..exactly 10.2 mpg. And yours has a six inch lift with 37's! Man I'm getting ripped here.

[rmutchler]

Stock tires and exhaust, 12.7 mpg mixed city/highway driving.

[tyler1bo]

What kind of exhaust? And that's not too bad right there, I would take 12.7 easily!

[Dddhorn]

I have a 2004 with stock wheels, tires, exhaust and CAI. I average 12.4 with mixed city/HWY, but mostly HWY. Probably about 25%/75%.

[410225]

2007 Stock everything. Driving from IL to MI 352miles, I am seeing highway between 18.6-19.5MPG. City driving AVG 12MPG

[tyler1bo]

Well it seems everybody is averaging around 12 mpg in the city. Where I live I hardly ever do any highway driving. It's practically all city..I guess my tires are messing me up.

[Stellar]

Avg 15.5 mpg City / Highway with stock tires..Seen 16+ mpg heading down to Vegas from Utah. A few minor adjustments can make the H2 mpg comparable to most trucks..

[guruerror]

Originally Posted by Stellar

Avg 15.5 mpg City / Highway with stock tires..Seen 16+ mpg heading down to Vegas from Utah. A few minor adjustments can make the H2 mpg comparable to most trucks..

15.5 average!? WOW! Your foot must be light indeed, or you've always got the wind at your back. Good for you!

[tyler1bo]

Haha. That's what I'm saying! I mean I dont stomp on mine everywhere and I still get 10.2!! 15 blows me out of the water! How do y'all do it?! I must have the best gas guzzling '08 they made. Lol

[mbdougl]

I don't how some people are figuring the mileage but there is only one way to get an accurate result (below). Does anybody do this are all we all just trusting what is says on the dash, mine goes fron 11.9 to 12.9 and never changes even if I drive all highway. I wonder how accurate it is?

Best way is to fill up your tank, then set your trip meter to zero. Drive your car until you need gas the next time. When you fill up your car again read how many gallons of gas you put in then take the trip meter reading and divide by the gallons of gas to get MPG.

EX. 350 mile were driven and you placed 10 gallons of fuel back in the car. SO 350/10 =35MPG

[guruerror]

I've done that too...'cause, just like you, I was curious about how accurate the computer was. My calculations were pretty much spot on with what the computer estimated.

I do see a difference though depending upon where I'm driving. Just before a cross country trip from MD to UT I reset the computer and jumped on the interstate; when I got to UT my average was 15.9...but that was basically ALL highway miles.

I haven't reset it for a while now...I guess I just stopped thinking about it. The general temperature seems to effect it too...slightly...mid winter it'll read 11.3 or 11.4; mid summer it'll read 11.7...even if it's lying to me what am I gonna do about it?! LOL! I still love to drive it...so I keep filling it up.

[Big.Z.hummin]

well i beat all of you! stock height suspension, 35' toyos and im getting 8.8 mpg in dallas city living needless to say i spend a lot of time and $ at the pump

[ROUSHDEMON]

Damn BigZ!.... i run 40's and I'm still doing better than you!! I get around 9.8mpg to 10.2.... you most really be drag racing that thing every day

[tyler1bo]

Haha. I guess there's not much I can do either. I guess I'm gonna keep adding and keep filling up! Haha

[tyler1bo]

Dang 8.8 means really flippin out the wallet every time you pump! At 3.30 or so a gallon its about $100 for me to completely fill up from almost bone dry.
Sucks!! And then I turn it on to see a 280 some odd mile fuel range!

[Hellz]

last i checked i was at 8.9 mpg

gave it a tune up a few months ago, it really dipped from about 9.5 after i cleaned the air filter on my K&N CAI

37 inch KM2
predator tuner
stock gears