RE: Gas Mileage Improvement after 2,000 miles?

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RE: Gas Mileage Improvement after 2,000 miles?

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RE: Gas Mileage Improvement after 2,000 miles? - 3/8/2007 6:43:39 PM

kild1

Posts: 852
Joined: 12/26/2006
Status: offline

i was told yesterday at the dealer that after 2 or 3 oilchanges it will get alittle better mpg
this was the service guy not a say anything salesman

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07 H3X Sonoma Red Metallic

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RE: Gas Mileage Improvement after 2,000 miles? - 3/8/2007 10:18:02 PM

finskeeper

Posts: 107
Joined: 10/5/2006
Status: offline

I guess I'm on the low end at 13.8 mpg. with 50/50 highway/city and 16.2 all highway. It's been consistent over the last 10 fills.

That's also with a PCM tune and a K&N filter (no CAI). I'm thinking the PCM tune may be contributing to the lower mileage 'cause I told Kelly I would like more high end torque (occasionally towing a boat). Or it may be my sportscar foot... not sure.

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RE: Gas Mileage Improvement after 2,000 miles? - 3/10/2007 12:56:04 PM

zx1100

Posts: 42
Joined: 2/3/2007
Status: offline

Was just able to get 325 miles before the warning light came on. This is about 70% highway and 30% city driving. This was only my second tank of gas put through so far :)

< Message edited by zx1100 -- 3/10/2007 12:57:02 PM >

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Post #: 18

RE: Gas Mileage Improvement after 2,000 miles? - 3/11/2007 8:03:31 PM

medicmdc

Posts: 2
Joined: 3/7/2007
Status: offline

I am getting 13.5-13.8 mpg . Had it in the shop twice, was told after break-in (5000 miles) they would relook at it. Still not getting any better with just under 5000 miles .. I got better mpg with my full size truck ....

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Post #: 19

RE: Gas Mileage Improvement after 2,000 miles? - 3/11/2007 10:40:36 PM

LawWyfe

Posts: 1565
Joined: 11/15/2006
Status: offline

Just drove over 700 miles this week up to central FL and back on 2 tanks of gas - (each filled when on empty). The 2nd one I forgot my gas light was on and kept driving around until I finally looked down and said OH SH*T I forgot and coasted (on fumes I am sure LOL) into the gas station at 350 miles driven.

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RE: Gas Mileage Improvement after 2,000 miles? - 3/11/2007 10:56:32 PM

importkiller

Posts: 7254
Status: offline

I once broke the 200 mile mark on a tank....boy that was a good day.

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RE: Gas Mileage Improvement after 2,000 miles? - 3/11/2007 11:48:44 PM

littlehummerboy

Posts: 2176
Status: offline

IK, I hate to rub it in, but we usually average just over 22 MPG in our '07 H3. On my recent trip to Vancouver and back, which included about 50 Km city driving and about 850 Km of highway, but through higher mountain passes I averaged 19.5 MPG, and I'm a bit of a lead foot. My GF gets better mileage 'cause she drives "nicer".

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Post #: 22

RE: Gas Mileage Improvement after 2,000 miles? - 3/12/2007 12:23:31 AM

importkiller

Posts: 7254
Status: offline

I have come to grips with my 9 mpg....ya gotta pay to play!

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RE: Gas Mileage Improvement after 2,000 miles? - 7/9/2007 7:25:45 PM

jng1226

Posts: 86
Joined: 6/25/2007
Status: offline

LHB - when you're driving on the highway what is your typical cruising speed?

I only have about 800 miles on my '07 5-speed, and so far I'm getting about 17.4 mpg with about 60% highway/40% suburb driving. I typically go about 70-75 mph and try to shift at around 2200-2600 rpm. I did this in my '03 Nissan 350Z 6-spd and regularly beat the EPA sticker hwy figure of 26 with an actual 28 highway/25+ combined average.

Jeff

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Post #: 24

RE: Gas Mileage Improvement after 2,000 miles? - 7/14/2007 7:40:51 PM

Dennis

Posts: 7584
Status: offline

Last time I fiiled up..I filled it till the gas was at the top of the fill neck, at the cap..Today I filled up again exactly like last time, and I put in 6.4 gallons @$3.28/gal 89 octane

My trip odo was @ 118.1 miles since the last fill......of city drivng mostly, with A/C on.

118.1 ÷ 6.4 = 18.45 MPG....

In case anyone new askes...

K&N CAI
GIBSON Cat-back exhaust (dual outlet)
PCM tuned by PCMforless
and
High speed chrome lug nuts.

I suggest, if y'all want exacting numbers on your mileage...take the time and force fill ( I found a pump where it is real easy to start and hold at a trickle) your's to the top for the next two fill ups, like I did and see what your mileage is then..it's the only way to be sure.

< Message edited by Dennis -- 7/14/2007 7:49:43 PM >

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RE: Gas Mileage Improvement after 2,000 miles? - 7/14/2007 9:51:51 PM

alrock

Posts: 1058
Joined: 5/12/2007
From: Scottsdale, AZ
Status: offline

Just put on 1400 miles in the last week. 90% highway but with some stop and go. Never got above 16.5 on a tank even when it was 100% highway, though A/C was on the whole time. Set cruise control at 75 in CA and 80 in AZ

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RE: Gas Mileage Improvement after 2,000 miles? - 7/14/2007 10:41:25 PM

DOM H3X

Posts: 11
Joined: 6/10/2007
Status: offline

I have about 1,500 miles on mine and i'm getting 328!!! I hope it get better over 2000, that would be great!!

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RE: Gas Mileage Improvement after 2,000 miles? - 7/14/2007 10:43:59 PM

jng1226

Posts: 86
Joined: 6/25/2007
Status: offline

Alrock - that's about what I'm getting at those speeds. I've got 1600 miles now but I haven't changed my oil yet and the last tank was 17.19 mpg with 65% hwy/35% city driving. Do you have an automatic 07? I have a 5-spd and I thought I would get at least 1-2 more mpg than the 4-spd auto.

Dennis - how many miles do you have on the clock and I assume yours is an auto as well?

I'm going to have the first oil change at about 2,000 miles and I'm going to use 0-30w Mobil 1. I'm curious if the low viscosity full synthetic oil will make any difference in mpg.

Then I'm going to monitor the changes with the CAI and finally exhaust. Ideally I would have dyno runs to back up the mpg "data" but I don't have the hook-up like I did where we used to live.

Jeff

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Post #: 28

RE: Gas Mileage Improvement after 2,000 miles? - 7/15/2007 6:32:41 AM

Dennis

Posts: 7584
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The oil change at 2000 miles is a great Idea..I did mine at the first 1000 miles...then every 5000 miles there after.

But you had better use 5w30 or you will void the warranty for sure (don't screw around here, you may regret it)..I use Castrol Syntec in all my cars..it is the second best synthetic for less engine wear on the market compared to Amsoil...Mobil 1 is near the bottom of the list...

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Post #: 29

RE: Gas Mileage Improvement after 2,000 miles? - 7/15/2007 12:20:21 PM

alrock

Posts: 1058
Joined: 5/12/2007
From: Scottsdale, AZ
Status: offline

quote:

ORIGINAL: jng1226

Alrock - that's about what I'm getting at those speeds. I've got 1600 miles now but I haven't changed my oil yet and the last tank was 17.19 mpg with 65% hwy/35% city driving. Do you have an automatic 07? I have a 5-spd and I thought I would get at least 1-2 more mpg than the 4-spd auto.
Jeff

Jeff, I have an 07 auto. I've changed the oil once and now have Mobil 1 synthetic in there. I have gotten nearly 19mpg on road trips with no a/c and that was with an extra 350 lbs in the car (large passenger and luggage). I never got above 16.5 until about 4000 miles on the odometer. Give it a little more break-in time.

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