first tank of gas on '07 h3 with auto
 

i'm waiting for light to come on which will be very soon and i project it will be about 13 mpg. :crying: :crying: :crying: i didn't think it would be that bad. 3/4 country-suburban driving, not going over 45 during break-in period. driving very conservatively. is that mileage off the wall, or expected during very early break-in period. if i'm lucky i'll hit 300 miles when the refill light comes on. with 23 gallon capacity, thats about 13. i know there are mileage threads here. but newcomers are buying '07s so it would be interesting to hear what they're getting, and to hear what the veterans say. i was getting 17 on my '03 toy 4runner ltd with 8 cylinders from the day i got it until today when they picked it up, end of 39 month lease.:crying: :crying: :crying:

Re: first tank of gas on '07 h3 with auto
 

Too early to tell, and math is incomplete for a mileage calculation. Give it a few more miles of break-in.

In 30,000 miles lowest I''ve seen is 14, highest 18. Usually get 15 in mixed driving (city, suburb, fast freeway) with a pretty heavy foot.

Re: first tank of gas on '07 h3 with auto
 

When my light comes on it is all I can do to put in 20 gallons. If yours does that, 300 miles would be 15mpg. A bit low, but since it is new it could come up.

Who filled it up the first time? If it was the dealer, they likely shorted you a bit by not topping off.

Hope it gets better, but if it doesn't, it is still a Hummer.:D

Re: first tank of gas on '07 h3 with auto
 

The general rule is... the less MPG you get, the cooler you are. I had like 18mpg average during break-in, but I babied it. My last tank before I traded the H3 in was 10.6 mpg. :giggling:

Re: first tank of gas on '07 h3 with auto
 

Ihave an '07 as well and it got better for me after the break in i got about 13 during breakin and now im getting around 14.5 to 15 mpg on average and thats all suburban driving, havent taken my car to the highway yet, we use my moms car if were going somplace far that involves the highway!

Re: first tank of gas on '07 h3 with auto
 

hey when the gas light goes on, how much miles do u think u have left in that tank? Normally i dont wait for the light to go on because A: im not sure it went on B: because im a panzy

I wanna wait until it goes on so i know how many miles im getting.
I already put on 3300miles on my '07, i obviously dont play around:jump:

Re: first tank of gas on '07 h3 with auto
 

My 1st tank = All city driving I got 14.3 mpg. My last tank = All interstate driving I got 17.1 mpg. On a total of 8 tanks so far with the average being 16 mpg. I'm happy. :fdance: :jump: :fdance:

Can't think of why your getting lower though, unless its air filter related...or speed related. :p :giggling:

Re: first tank of gas on '07 h3 with auto
 

Get 35's... then you won't care anymore.

Re: first tank of gas on '07 h3 with auto
 

:iagree: I didn't even know I had a light for gasoline.

Re: first tank of gas on '07 h3 with auto
 

I agree and 15 is only one gallon lower than the estimate. In addition, weather has a direct relation to the fuel mileage.

Re: first tank of gas on '07 h3 with auto
 

Good point HumbleAg. I usually have around 330 miles before the light comes on and can usually only put around 20 gal in. Thats about 16.5 mpg. Have seen 19 on the highway and low of about 14. I haven't driven far enough on the empty light to put in 23 gal...

Re: first tank of gas on '07 h3 with auto
 

when did you get it, and what's your current mileage? TIA

Re: first tank of gas on '07 h3 with auto
 

it's definitely not speed or heavy-foot related. i'll see what it looks like after the 2nd tank. if it's still lower than what everyone got, i;ll bring it up with the dealer. what would the aur cleaner issue be?

Re: first tank of gas on '07 h3 with auto
 

I'd suggest monitoring several tanks first (keep a log and do the math correctly), that way the truck will be broken-in. Personally I check my mileage at almost every fill-up and write the calculation (mileage, gallons, mpg) on my Chevron receipt.

Re: first tank of gas on '07 h3 with auto
 

From everyone elses math when light goes on they fill up 20 gallons, with a 23 gallon tank @ 15 mpg you have roughly 40-45 miles left when the light comes on. :clapping:

Re: first tank of gas on '07 h3 with auto
 

Got my 06 H3 in august got my best hwy mpg of 17.5 :) all highway cruise set at 70 mph with less than 1000 miles on odometer, now with about 16800 my best mpg is 15 on hwy w/cruise set at seventy so after break in mine got a little worse:( all this with extra weight of winch, roof rack, high lift and pull pall. not sure what changed for less mpg but still get 15 on 20.1 gallons when light comes on so i,m satisfied although it would be nice to see city mileage during hwy driving:p
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Re: first tank of gas on '07 h3 with auto
 

I think it varies a lot as you can tell with the repsonses here. I got a 20mph and quite a few 19s during the early part of break in. Now with winter, it is not as good. But in 11K miles it averages out over 18mph. Not bad. I am pretty casual , and it's a 5 speed.

Re: first tank of gas on '07 h3 with auto
 

Your LUCKY !!!

RYD

Re: first tank of gas on '07 h3 with auto
 

13 to 14 is all you will ever get. I got 13.9 on my last tank, went about 249 miles till the light came on and then put in 19 gallons.

I have the lux/offroad with 33 inch tires. i think people getting better mileage are with 32 inch tires and manual tranny.

Re: first tank of gas on '07 h3 with auto
 

No. I have the lux with off-road package and auto, and I get better than 14 during the warmer months, and this figure is based on to and from work, which is totally stop and go in this area. As for highway, I have obtained over 18 mpg.