RE: H3 actual gas mileage

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RE: H3 actual gas mileage

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[Poll]

H3 actual gas mileage

16 City 20 Hwy

33% (19)

14 City 18 Hwy

42% (24)

12 City 16 Hwy

17% (10)

10 City 14 Hwy

5% (3)

Total Votes : 56

(last vote on : 3/28/2008 5:09:16 PM)
(Poll will run till: -- )

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RE: H3 actual gas mileage - 5/10/2006 6:36:35 PM

Sewie

Posts: 238
Joined: 3/29/2006
Status: offline

quote:

i don't know if the H3 offers an "instant mileage" display or not

No it doesn't

.

Mine has been pretty steady at ~15mpg. But I didn't buy a Hummer for the gas mileage.

_____________________________

'06 H3 Adv., Boulder Gray
http://www.h3adventures.com

(in reply to shortbus)

Post #: 16

RE: H3 actual gas mileage - 5/10/2006 6:48:15 PM

Golden Shellback

Posts: 419
Joined: 2/4/2006
Status: offline

ok, I just talked to someone at my dealer service department and the guy said they don't have any calibration for the H3's, even 32's to 33's!

(in reply to Sewie)

Post #: 17

RE: H3 actual gas mileage - 5/10/2006 6:52:06 PM

shortbus

Posts: 3602
Joined: 6/27/2005
Status: offline

quote:

ORIGINAL: Sewie

But I didn't buy a Hummer for the gas mileage.

i did, but mainly for the crappy mileage. the faster i use up the fossil fuels, the faster science will come up with renewable energy sources.

dealers are lying to you when they say they don't have a way to reprogram for larger tires, they're not willing, based on some kind of safety/EPA/legal crapola. find a friendly mechanic with a tech II programmer, and i bet he/she could make it happen.

(in reply to Sewie)

Post #: 18

RE: H3 actual gas mileage - 5/10/2006 6:56:00 PM

Sewie

Posts: 238
Joined: 3/29/2006
Status: offline

quote:

i did, but mainly for the crappy mileage. the faster i use up the fossil fuels, the faster science will come up with renewable energy sources.

See, now that was my thinking too. I just didn't think anyone else would buy it.

_____________________________

'06 H3 Adv., Boulder Gray
http://www.h3adventures.com

(in reply to shortbus)

Post #: 19

RE: H3 actual gas mileage - 5/10/2006 7:03:51 PM

Golden Shellback

Posts: 419
Joined: 2/4/2006
Status: offline

quote:

ORIGINAL: shortbus

dealers are lying to you when they say they don't have a way to reprogram for larger tires, they're not willing, based on some kind of safety/EPA/legal crapola. find a friendly mechanic with a tech II programmer, and i bet he/she could make it happen.

thanks...and guess who my dealer is????

(in reply to shortbus)

Post #: 20

RE: H3 actual gas mileage - 5/10/2006 7:10:13 PM

shortbus

Posts: 3602
Joined: 6/27/2005
Status: offline

did you buy from Sac too? i thought there was a dealer in your neck of the woods. i just spent 3.5 hours there today, enjoying the scenery and getting a cracked manifold replaced (gotta love the extended warranty). tried to talk the mrs. into the yellow alpha softop pickup on the lot. i didn't think it was a funny question, but she sure did laugh a lot.

(in reply to Golden Shellback)

Post #: 21

RE: H3 actual gas mileage - 5/10/2006 7:49:39 PM

Dennis

Posts: 7584
Status: offline

That was Brilliant Shorty..I never thought of the tire diameter being a major cause for the inaccuracy, nice catch!...The dealer can to calibrate, or at least it's doable..because how else are they calibrating for the two different tire sizes between the standard H3 packages and the Adventure packages?..275 to 285 is a pretty good difference to throw off calibration...So it must be done at the factory is my guess.

(in reply to shortbus)

Post #: 22

RE: H3 actual gas mileage - 5/10/2006 8:18:52 PM

shortbus

Posts: 3602
Joined: 6/27/2005
Status: offline

the dealerships can change the programming, but only to match the sizes they offer. they can go beyond that, but won't.

the rest, basic physics. it's just hard to get people to understand for some reason. if it's not complicated, for some reason nobody believes it.

and thanks, nice to see someone gets it.

< Message edited by shortbus -- 5/10/2006 8:19:33 PM >

(in reply to Dennis)

Post #: 23

RE: H3 actual gas mileage - 5/11/2006 2:17:37 AM

Linus Gump

Posts: 960
Status: offline

I seem to be getting around 16.4 or so over all. it's about a 33/33/33 mix city/hiway/off road. I have had one fill up from just freeway miles, and that was 18+, but on the other end of the spectrum, I filled up, went fourwheeling, and then came back to the same station and filled up again and barely had a double digit number.

I don't complain too much about it.

(in reply to shortbus)

Post #: 24

RE: H3 actual gas mileage - 5/11/2006 3:02:56 PM

jbb6811

Posts: 66
Joined: 3/23/2006
Status: offline

so far i have not engine upgrades and i run bfg all terrain 285-65-18. i get around 14-16 in mostly city. but i'm going to florida at the end of the month so i'll post hwy mileage!

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00 z-28 m6 blue/06 H3 a4 blue
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(in reply to Linus Gump)

Post #: 25

RE: H3 actual gas mileage - 5/12/2006 2:24:02 PM

importkiller

Posts: 7254
Status: offline

quote:

ORIGINAL: shortbus

the dealerships can change the programming, but only to match the sizes they offer. they can go beyond that, but won't.

the rest, basic physics. it's just hard to get people to understand for some reason. if it's not complicated, for some reason nobody believes it.

and thanks, nice to see someone gets it.

Taller tires will throw it off but not enough to bring mpg down that drastically!! Easy way to find out is get a gps and zero out the mileage of both the gps and the trip odo. Take a 20 mile drive or so and see what the mileage difference is. On my Tahoe I went from stock 265 (I think) to 35's and my mileage was off by 2.4 mpg on a tankful.

(in reply to shortbus)

Post #: 26

RE: H3 actual gas mileage - 5/12/2006 2:57:41 PM

racepet

Posts: 81
Joined: 4/18/2006
Status: offline

Another way is to measure the height of the tires and multiply by pi on both tires and then look at the difference.

What you really want to be aware of is the actual vehicle speed. I had a stock 91 Toyota pickup and turned it into a Fabtech beast going from 28s to 33s and the end result was I was going 59MPH when the speedo said 50MPH. CHP made me aware of the problem one night in Canyon Country.

(in reply to importkiller)

Post #: 27

RE: H3 actual gas mileage - 5/12/2006 3:15:39 PM

shortbus

Posts: 3602
Joined: 6/27/2005
Status: offline

quote:

ORIGINAL: importkiller

quote:

ORIGINAL: shortbus

the dealerships can change the programming, but only to match the sizes they offer. they can go beyond that, but won't.

the rest, basic physics. it's just hard to get people to understand for some reason. if it's not complicated, for some reason nobody believes it.

and thanks, nice to see someone gets it.

Taller tires will throw it off but not enough to bring mpg down that drastically!!

that's my point exactly. your computer may show a change in mileage, but in actuality the tire size change does very little to true mileage.

(in reply to importkiller)

Post #: 28

RE: H3 actual gas mileage - 5/12/2006 3:35:11 PM

Dennis

Posts: 7584
Status: offline

Shorty is right guys..The taller tires or larger in diameter will throw off you MPG by what the ODO says..Remember, the axles are still turning at the same rate compared to the stock tires calibration, this is as far as what the computer thinks....Hope I said that right.

< Message edited by Dennis -- 5/12/2006 3:37:15 PM >

(in reply to shortbus)

Post #: 29

RE: H3 actual gas mileage - 5/12/2006 4:09:50 PM

racepet

Posts: 81
Joined: 4/18/2006
Status: offline

Good thing here is resell. The mileage can be 10-15% less than reality. Of course no one here will buy mine now.

(in reply to Dennis)

Post #: 30