Last Nite I happeded to calu my total average since mid -Jan when I got her...

Got around 3500 miles now so after 3 months getting overall around 15 mpg. That includes 1 trip to Orlando.

My right foot does weight a lot more then my left but i use cruise contro; as much as possible. Hate 2 think what it would be like if it wasn't level ground. Being able to use regular for the first time since 1998 is a plux...

RYD

37,270 miles on the H3 as of this morning. Still a tight machine with no rattles or annoying noises! My rear wheel flares are getting a little rock chipped (my only complaint), but I'm not a mud flaps kind of guy for the front wheels. Gas mileage for the last 7 fill ups has averaged 16.87, but this has been 75% highway travel with a heavy foot.

Just did another mileage check at about 1200 miles of mostly local driving. 16.3 this time.

Damn I must have a heavy foot. Just filled up this morning and with 3,238 miles I got 12.98 on the last tank. I drive pretty much all city except 3 miles each way to work on the highway. Of course it doesn't help that I do between 70 and 80 for those 3 miles.

At 15,500 miles +, my last 5 tanks have averaged 14.7 - 15.9 mpg. City traffic combined with high speed freeway (70-85mph).

S.

I was getting a consistant 16mpg commuting. My commute is 45 miles twisty mountain road down and up 4200' elevation change. I grannied it (easy gas pedal, keeping speed through the corners, losing speed up hills instead of keeping it constant, no passing etc.) last tank and got 18mpg. This is a great increase as it allows me one more day without filling up and saves $6 a tank. I've been calculating every tank. I'm sure that our H3 would get 20 on the freeway.

I'm consistently getting 20+ MPG out of my H3... Best tank that I have checked was 21.6 and the worst was around 17 during "break in". this is with mixed driving and speeds under 65 MPH.

Years ago when the VW bug was getting big in America people used to brag about the great gas milage they were getting. WELL..this one gentlemen I know of was getting AMAZING gas milage..60-70 even a 100 miles to the gallon...it seems his neighbor was slipping a gallon or two in his tank to see how tall the tales would get!

The tooth FAIRY is now paying $35 per tooth and $50 for the very back ones.

SORRY !

I'm sure your an honest person

BUT

just maybe your math skills are lousy !!! "Twenty plus"
I just don't buy it...

RYD

Damn that's impressive.

I was happy with my city driving coming out to 14.5 mpg the other day.

20mpg is impressive, driving under 65mph in California is impossible on the freeway.

S.

Damn that's impressive.

I was happy with my city driving coming out to 14.5 mpg the other day. </div></BLOCKQUOTE>

I'm still more impressed by your avatar. Quite mesmorizing.

H3wannabe

IS anyone else getting 20+ MPG AVERAGE ???
not hwy alone...

RYD

Hell, I haven't even gotten close to 20 on the highway

have had 41 owners reporting 14.3 to 19.7, but no one getting over 20 yet.

Latest city driving, all stop and go to work and back, is 15.4 so it is going up to what it was last summer.
Can't complain, it is reated 16/20 or 16/19 and that is under ideal conditions.

Just remember all you in the west and other areas that use Ethanol fuel, your mileage will suffer a small amount.

It is my understanding that all fuel nation wide is to have Ethanol in it by the end of May.

H3HUMVEE

HAVE you double and triple checked your math skills like we asked.

BECAUSE

Your the only one in the country or anywhere getting that kind of mileage...

RYD

the last tank I got 12.4 mpg

For those of you who are running the Adventure package or are running 33's, please adjust by increasing your total mileage by 3.7%.

So, if you're ran 100 miles on the odometer, you've actually run 103.7 miles.

The 3.7 percent can make a difference in regards to your overall MPG. For example (in a perfect mathematical world using 11 gallons of fuel exactly):

Running 32's (base/lux)
200 Miles run
11 Gallons used
200/11 = 18.18 MPG

Running 33's (Adventure)
200 Miles run (on odometer)
207.4 miles actual (3.7% difference)
11 Gallons used
207.4/11 = 18.854 MPG

RYD... I can assure you I can easily calculate my gas mileage and I'm sorry all your gas mileage sucks ... how many people on here that have posted there mileage are driving the 5 speed manual transmission ?? that's what mine is.

Wouldnt the adventure package be properly calibrated from factory?



H3HUMVEE

HAVE you double and triple checked your math skills like we asked.

BECAUSE

Your the only one in the country or anywhere getting that kind of mileage...


For high mpg you could fill up on top of a hill that is 10 miles long coast down it at 65mph at the bottom refuel you mpg will be sky high
I did it with a murano and the gas computer said 99.9 mpg by the bottom of the hill

In that situation the H3 should get at least 75mpg

Only once in over 15K miles have I hit 18mpg. But I haven't tried any long downhill runs with a fillup and I haven't fixed my lead foot.

S.

Why? There are different calibrations for the off-road and the regular package. I have to assume GM has a different odo calibration in each one. So, if the vehicle came from the factory with the larger tires, the odo SHOULD be correct, those who installed larger tires will have an innacurate speedo. Even with that, your calculations will not be accurate for all H3s.
My speedometer is off by under two miles at 70 mph, calculated on two separate GPS units, on two different trips, and I even did the mile marker versus the stop watch a few times on flat ground in IN.
I'm probably getting a little less in mileage than I stated earlier, but it would be about .4 per mile.
Since those trips, I have uploaded two different calibrations but have not rechecked the miles on the speedo versus the GPS units. Hopefully, one of those calibrations corrected this error.

(NOTE: Federal Law allows a 5$ plus or minus on speedos.

Called a few other people today, 9, and the best of the 9 is 18.3, so 50 owners and no one over 20

So far I am so impressed with this vehicle that I almost forgot about mileage. I bought the base model with not one single option. (Don't need anything else) Slate blue. 5 speed. I decided when I bought it to either take the trrain to work, or keep it under 65 (barely).
Anyone driving nice and keeping track of mileage with a standard?

I call Bull Sh*t... sure you know 9 other H3 owners you could call all in the same day and find out there gas milage ...

Welcome to the forum ... keep it under 65 and shift when the indicator flashes on the dash and you should get 20+ MPG .. of course no one on here will believe you

I call Bull Sh*t... sure you know 9 other H3 owners you could call all in the same day and find out there gas milage ... </div></BLOCKQUOTE>
Call if you must, but I am a dealer and already keep contact with about 103 (according to my list) H2 owners and close to 137 H3 owners (again according to my list). I talk to about 35 or so a week, throughout the week, about issues there are having, MPG, future Happening events. A couple are members of this forum. I had records of 41 with MPG reports this morning and wanted to round the firgures off to an even 50. Not all of them keep accurate records, so i only commented on the ones that assure me they do. I use this for sales (realistic expectations) and also to keep an inside track on issues in our area. But if you must call I believe the numer is 1-800-BUL-SH*T. Have a nice day

I call Bull Sh*t... sure you know 9 other H3 owners you could call all in the same day and find out there gas milage ... </div></BLOCKQUOTE>
Call if you must, <span class="ev_code_RED">but I am a dealer</span> and already keep contact with about 103 (according to my list) H2 owners and close to 137 H3 owners (again according to my list). I talk to about 35 or so a week, throughout the week, about issues there are having, MPG, future Happening events. A couple are members of this forum. I had records of 41 with MPG reports this morning and wanted to round the firgures off to an even 50. Not all of them keep accurate records, so i only commented on the ones that assure me they do. I use this for sales (realistic expectations) and also to keep an inside track on issues in our area. But if you must call I believe the numer is 1-800-BUL-SH*T. Have a nice day </div></BLOCKQUOTE>

Oh... your a car sales man In that case I belive anything you say

I call Bull Sh*t... sure you know 9 other H3 owners you could call all in the same day and find out there gas milage ... </div></BLOCKQUOTE>
Call if you must, <span class="ev_code_RED">but I am a dealer</span> and already keep contact with about 103 (according to my list) H2 owners and close to 137 H3 owners (again according to my list). I talk to about 35 or so a week, throughout the week, about issues there are having, MPG, future Happening events. A couple are members of this forum. I had records of 41 with MPG reports this morning and wanted to round the firgures off to an even 50. Not all of them keep accurate records, so i only commented on the ones that assure me they do. I use this for sales (realistic expectations) and also to keep an inside track on issues in our area. But if you must call I believe the numer is 1-800-BUL-SH*T. Have a nice day </div></BLOCKQUOTE>

Oh... your a car sales man In that case I belive anything you say </div></BLOCKQUOTE>
NO SIR! I am associated with HUMMER sales, not cars, not SUV's, after all, LIKE NOTHING ELSE!!

i have been doing allot of high way driving (Pittsburgh to Harrisburg) and Pittsburgh to Ft Knox and pittsburgh to Ft Dix. I consistantly averge over 18 and closer to 20 when I set the cruise at 75mgp and relax. Around town ( lots of hills) just sucks at around 12 mpg.

Let me throw one more log on this fire.

Maybe the ones that are getting really poor gas milage are ones that have low compression problems and don't know it yet.

My milage certainly got better after they put the new top end on it. Last tank I got 17.8 mostly interstate at 70 MPH..I do have the automatic transmision with adventure package. I have really tried to get better milage by watching the speed and the best I have seen is 18.2. Maybe with careful driving the smaller tires and the 5 speed you can break 20 MPG but I wouldn't have the patience to do it everday.

LOOK

Cut all the name calling and BS.

All i'm saying is that only ONE person that we know of is getting 20+ MPG on the AVERAGE. I don't know how many are registered on the H-3 Forum, lets say 500 (i know i'm way off to high AND to low) but thats 1 in 500. The odds can't be correct, OR theres a lot of people who have compression problems and if thats it then GM has a really BIG PROBLEM.

SO

without name calling and BULL CHIT has anyone got a GOOD LEGIT ANSWER???

RYD

You bite your tong!!

I would have to say that my average of 13 MPG is a matter of 90% city driving, almost always running 75-80 when on the highway and a not so light foot. I wish I was getting 17 or better but I love driving the H3 so much that I am still extremely happy driving it at 13 MPG.

Well, before all my mods I was getting 17.8 mpg average mostly city driving. But now I'm getting 12.4 mpg...but it's all good, gas mileage is never an issue for me, even I get 5 mpg I'll still be driving my H3 and go off roading.

Yeah, I think that has something to do with it. I know I've put on a lot of weight (to my rig, not myself ). With the weight of my UCP, roof rack, hi-lift, air compressor, toolbox, etc...its all got to have an effect on the mpg

Interesting thought, but the PCM will start registering misfires, and turn on the MIL light, as soon as there is any notable wear in the intake valve guides of cylinder one. In addition, a rough idle should start quit soon after the MIL light comes on.
If you drive with the misfires, it might affect mileage enough to be noticeable; not sure.

I do know my fillup tomorrow will cost well over $50. Chevron regular is running over $3.00 in Silicon Valley.

S.

I still only see one (1) person averaging 20+ MPG (city/hwy). Maybe he has an experimental engine in his that we or he doesn't know about
{huh, f5}

OR

As was stated the entire fleet of H-3's has compression problems (EXCEPT HIS)

OR

His math skills are lacking...

RYD