Welcome to the North American Subaru Impreza Owners Club Wednesday November 26, 2014
Home Forums WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Here you can view your subscribed threads, work with private messages and edit your profile and preferences Home Registration is free! Visit the NASIOC Store NASIOC Rules Search Find other members Frequently Asked Questions Calendar Archive NASIOC Upgrade Garage Logout
Go Back   NASIOC > NASIOC Subaru Models > Impreza Forum

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.
* Registered users of the site do not see these ads.
Reply
 
Thread Tools Display Modes
Old 04-09-2012, 11:39 AM   #351
ans2k
Scooby Specialist
 
Member#: 315631
Join Date: Apr 2012
Location: Bryant, AR
Vehicle:
2012 Impreza Sport

Default

Quote:
Originally Posted by SleepNMnky View Post
From the monster of a thread under News & Rumors http://forums.nasioc.com/forums/show....php?t=2131206
Its not working for me. My cars says 32.1 but I calculated it out to be 28.7.
* Registered users of the site do not see these ads.
ans2k is offline   Reply With Quote
Old 04-09-2012, 06:07 PM   #352
flyboy1100
Scooby Specialist
 
Member#: 314216
Join Date: Mar 2012
Location: ND
Vehicle:
2012 2.0i Sport 5MT
DGM

Default

i see lots of CVT reports, how are the 5speeds doing?
flyboy1100 is offline   Reply With Quote
Old 04-09-2012, 06:09 PM   #353
79letour
Scooby Specialist
 
Member#: 302570
Join Date: Nov 2011
Location: dear old dixie
Vehicle:
2013 XV
DGM!

Default

My 5mt does really well. Around town and in rural area I think the manual gets better mileage. But on long commutes the cvt does waaay better. I say this from my experience from driving both.
79letour is offline   Reply With Quote
Old 04-09-2012, 06:30 PM   #354
ans2k
Scooby Specialist
 
Member#: 315631
Join Date: Apr 2012
Location: Bryant, AR
Vehicle:
2012 Impreza Sport

Default

does anyone have experience with calibrating the mpg and avg mpg readings?? i tried doing the steps that were posted but no such luck
ans2k is offline   Reply With Quote
Old 04-09-2012, 07:52 PM   #355
ChrisAS
Scooby Newbie
 
Member#: 316288
Join Date: Apr 2012
Default

I also want to know about the calibration
ChrisAS is offline   Reply With Quote
Old 04-09-2012, 08:42 PM   #356
o2brew
Scooby Newbie
 
Member#: 309096
Join Date: Feb 2012
Default Odometer not accurate

I noticed yesterday while on a long freeway stretch that the odometer appears to be off by a noticeable amount. After 40 mile post markers my odometer only showed a distance traveled of approximately 38 miles. I checked it every 10 miles and it was off every time, from .3 to .5 miles.

If this is the case for others it would partially explain the MPG. That's 5% off, which would be 1-2 MPG.

First fill up calculated to 27.3 MPG, but if I assume odometer was off by 5%, that takes it to 28.6 which is pretty close to the displayed 29.1.
o2brew is offline   Reply With Quote
Old 04-09-2012, 09:44 PM   #357
hemophilic
Scooby Specialist
 
Member#: 301213
Join Date: Nov 2011
Chapter/Region: South East
Location: Raleigh, NC
Vehicle:
2012 Imp. Sp. Ltd.
Blue/Silver

Default

My GPS was within 1 mph last I checked and my trip is generally 1 or 2 mpg off.
hemophilic is offline   Reply With Quote
Old 04-09-2012, 09:49 PM   #358
ST Eye
Scooby Specialist
 
Member#: 73068
Join Date: Oct 2004
Location: MD
Vehicle:
2008 STI Boost Wagon
2014 Honda Accord Hybrid

Default

I won't complain if the odo is off in my favor.
ST Eye is offline   Reply With Quote
Old 04-09-2012, 10:47 PM   #359
SleepNMnky
Scooby Specialist
 
Member#: 302491
Join Date: Nov 2011
Chapter/Region: Tri-State
Location: Buffalo, NY
Vehicle:
2012 Impreza 2.0i Pr
Dark Grey Metallic CVT

Default

The method previously posted about calibrating the MPG gauge was for the Canadian models. Haven't found a way on the US models & my tech looked at me like I was nuts when I asked. I may have the service manager look into it.

I also doubted the odometer so I used my GPS & my speedometer AND odometer are spot on. My GPS has a fuel Eco gauge too which matched up with the Eco gauge on the Subaru. I wish I could blame my crappy mileage on the meters but I can't. Fingers crossed for a firmware update.
SleepNMnky is offline   Reply With Quote
Old 04-09-2012, 10:50 PM   #360
ST Eye
Scooby Specialist
 
Member#: 73068
Join Date: Oct 2004
Location: MD
Vehicle:
2008 STI Boost Wagon
2014 Honda Accord Hybrid

Default

Quote:
Originally Posted by SleepNMnky View Post
The method previously posted about calibrating the MPG gauge was for the Canadian models. Haven't found a way on the US models & my tech looked at me like I was nuts when I asked. I may have the service manager look into it.

I also doubted the odometer so I used my GPS & my speedometer AND odometer are spot on. My GPS has a fuel Eco gauge too which matched up with the Eco gauge on the Subaru. I wish I could blame my crappy mileage on the meters but I can't. Fingers crossed for a firmware update.
Did you hear that one was coming down the pike?
ST Eye is offline   Reply With Quote
Old 04-09-2012, 10:56 PM   #361
SleepNMnky
Scooby Specialist
 
Member#: 302491
Join Date: Nov 2011
Chapter/Region: Tri-State
Location: Buffalo, NY
Vehicle:
2012 Impreza 2.0i Pr
Dark Grey Metallic CVT

Default

Quote:
Originally Posted by ST Eye
Did you hear that one was coming down the pike?
Not yet, no. One other poster mentioned his dealer thought it would be needed due to the number of people complaining there. My dealer is trying to put together #s to present to SOA after their BS line that this car has a 10k mile break in period. Once all of us at my dealer start hitting 5000 miles they're going to run fuel consumption tests & take it further with SOA.
SleepNMnky is offline   Reply With Quote
Old 04-09-2012, 11:08 PM   #362
ST Eye
Scooby Specialist
 
Member#: 73068
Join Date: Oct 2004
Location: MD
Vehicle:
2008 STI Boost Wagon
2014 Honda Accord Hybrid

Default

Quote:
Originally Posted by SleepNMnky View Post
Not yet, no. One other poster mentioned his dealer thought it would be needed due to the number of people complaining there. My dealer is trying to put together #s to present to SOA after their BS line that this car has a 10k mile break in period. Once all of us at my dealer start hitting 5000 miles they're going to run fuel consumption tests & take it further with SOA.
How do you run fuel consumption tests?
ST Eye is offline   Reply With Quote
Old 04-09-2012, 11:25 PM   #363
ans2k
Scooby Specialist
 
Member#: 315631
Join Date: Apr 2012
Location: Bryant, AR
Vehicle:
2012 Impreza Sport

Default

Quote:
Originally Posted by ST Eye View Post
How do you run fuel consumption tests?
put a known amount of gas in the car and run it close to dry or dry. i assume.
ans2k is offline   Reply With Quote
Old 04-09-2012, 11:46 PM   #364
ST Eye
Scooby Specialist
 
Member#: 73068
Join Date: Oct 2004
Location: MD
Vehicle:
2008 STI Boost Wagon
2014 Honda Accord Hybrid

Default

Quote:
Originally Posted by ans2k View Post
put a known amount of gas in the car and run it close to dry or dry. i assume.
It has to be more scientific than that.
ST Eye is offline   Reply With Quote
Old 04-09-2012, 11:47 PM   #365
SleepNMnky
Scooby Specialist
 
Member#: 302491
Join Date: Nov 2011
Chapter/Region: Tri-State
Location: Buffalo, NY
Vehicle:
2012 Impreza 2.0i Pr
Dark Grey Metallic CVT

Default

Quote:
Originally Posted by ST Eye
How do you run fuel consumption tests?
He's got it. They run it nearly dry & fill the tank to a predetermined amount of gas the tank is intended to hold so no overfilling effects anything. Then they drive the car under ideal driving conditions - or close to it (real world not simulated). They do this with 2 tanks & use the overall numbers from the 2 tanks. If their testing shows low numbers too with their "controlled" test then it's not my driving & not the driving conditions or the fuel blend.
SleepNMnky is offline   Reply With Quote
Old 04-09-2012, 11:51 PM   #366
ST Eye
Scooby Specialist
 
Member#: 73068
Join Date: Oct 2004
Location: MD
Vehicle:
2008 STI Boost Wagon
2014 Honda Accord Hybrid

Default

Do they have a track to run the car? And who drives it?
ST Eye is offline   Reply With Quote
Old 04-09-2012, 11:58 PM   #367
SleepNMnky
Scooby Specialist
 
Member#: 302491
Join Date: Nov 2011
Chapter/Region: Tri-State
Location: Buffalo, NY
Vehicle:
2012 Impreza 2.0i Pr
Dark Grey Metallic CVT

Default

Quote:
Originally Posted by ST Eye
Do they have a track to run the car? And who drives it?
Good questions to ask. I don't know. I should probably find out who, I'm assuming it's a Subaru trained tech or manager. My dealer is close to a long, flat, rather not busy highway that I'd assume they'd take runs back & forth on but I'm not sure. I do know they keep it for a few days.
SleepNMnky is offline   Reply With Quote
Old 04-10-2012, 12:27 AM   #368
ans2k
Scooby Specialist
 
Member#: 315631
Join Date: Apr 2012
Location: Bryant, AR
Vehicle:
2012 Impreza Sport

Default

sorry, my answer was very basic. but the test is very basic and cost effective. i mean they could hook up a diagnostic reader to the fuel injector to measure the pulse/spray pattern and duty cycle on a predetermine distance. but somehow, this scientific approach would probably be costly or too technical and overly complex for some. so yeah, pouring a predetermine amount of gas into the tank and seeing how far it gets you is pretty simple for me.
ans2k is offline   Reply With Quote
Old 04-10-2012, 09:12 AM   #369
pxpaulx
Scooby Newbie
 
Member#: 306218
Join Date: Jan 2012
Chapter/Region: MWSOC
Location: Twin Cities, MN
Vehicle:
2012 Impreza CVT
DarK Grey Met. Sport Prem

Default

Couldn't a fuel test be done by physically weighing the vehicle before/after then adding fuel to get back to the pre-drive weight?
pxpaulx is offline   Reply With Quote
Old 04-10-2012, 10:47 AM   #370
seaflipper
Scooby Newbie
 
Member#: 310047
Join Date: Feb 2012
Chapter/Region: NWIC
Location: Seattle
Vehicle:
2012 Sport Limited
ISM

Default

Quote:
Originally Posted by pxpaulx View Post
Couldn't a fuel test be done by physically weighing the vehicle before/after then adding fuel to get back to the pre-drive weight?
That's how car and driver does it for their testing. Apparently using just the "fill up the tank and divide miles driven since last fill up by gallons filled" is not the most accurate way of doing it - same pump different day can result in a significant difference in how much fuel you actually get in the tank.

However, weighing your car is not a practical way for most of us to measure at home
seaflipper is offline   Reply With Quote
Old 04-10-2012, 12:03 PM   #371
ans2k
Scooby Specialist
 
Member#: 315631
Join Date: Apr 2012
Location: Bryant, AR
Vehicle:
2012 Impreza Sport

Default

^probably not. just curious what do really really really large as a bath room scale? i just need four of those.
ans2k is offline   Reply With Quote
Old 04-10-2012, 12:13 PM   #372
BryanP5555
Scooby Newbie
 
Member#: 314731
Join Date: Mar 2012
Chapter/Region: South East
Location: Florida
Vehicle:
2014 WRX
SWP

Default

so i just did a rough estimate of fuel consumption.. i had 319 miles on the car and it had said i had another 40 miles left, but i dont know how accurate it is just yet. i just filled it up for $3.96 and it filled to $53.74. it breaks down to 26.666667 MPG. Not to bad for 1/3 of the way through break-in period.

I also do more around town driving then long stretches of driving.
BryanP5555 is offline   Reply With Quote
Old 04-10-2012, 12:26 PM   #373
pxpaulx
Scooby Newbie
 
Member#: 306218
Join Date: Jan 2012
Chapter/Region: MWSOC
Location: Twin Cities, MN
Vehicle:
2012 Impreza CVT
DarK Grey Met. Sport Prem

Default

Bryan

Instead of saying you paid 3.96 a gallon and paid 53.74, it'd probably be easier to just say how many gallons were purchased! Also, If I divide 53.74 by 3.96 I get 13.57 gallons - did you buy anything else in the gas station? If not, then 13.57 gallons over 319 miles comes to 23.51 mpg.
pxpaulx is offline   Reply With Quote
Old 04-10-2012, 12:31 PM   #374
pxpaulx
Scooby Newbie
 
Member#: 306218
Join Date: Jan 2012
Chapter/Region: MWSOC
Location: Twin Cities, MN
Vehicle:
2012 Impreza CVT
DarK Grey Met. Sport Prem

Default

Quick update to this current tank - still reading 33.6mpg at 205 miles (likely approx 31 calculated) - temps are also quite cold here this week, down to 33 this morning. Still giving terrible mpg for the first 2-3 miles (or minutes) of driving - still hating the pzev, but it seems that colder weather isn't having as much effect anymore at 3400 miles on the ODO. At this point I would place most blame for bad MPG during short trips/first 2-3 miles almost entirely on the pzev engine management*.

*not a complaint, just my observation! Hopefully SOA will be able to address this via a CPU flash of some sort.

Quote:
Originally Posted by pxpaulx View Post
Yep anything in the neighborhood of 45-65 will almost definitely be above 30 unless uphill or accelerating, and usually into the 40s or 50s.

Case in point: I left the house with 65 miles on the current tank, and ODO reading 29.1mpg. It initially dipped below that to 28.5mpg. I drove 65 miles today, with strong winds (upto 20 miles plus - yes some at the back of the car, but I returned home when winds were even stronger into the wind). Pulled into the garage with the ODO reading 33.9mpg. Since I doubled the current trip distance (65-130 approx) and added about 5mpg to the average mpg, that means that for this 2nd part of the current 130 trip I actually averaged approx. 39mpg. I'll even plot the trip for perusal on google maps if anyone is interested.
pxpaulx is offline   Reply With Quote
Old 04-10-2012, 12:51 PM   #375
RxMPLS
Scooby Newbie
 
Member#: 303353
Join Date: Dec 2011
Chapter/Region: MWSOC
Location: Upper Midwest
Vehicle:
2012 Impreza
Sport Ltd

Default

Quote:
Originally Posted by pxpaulx
Quick update to this current tank - still reading 33.6mpg at 205 miles (likely approx 31 calculated) - temps are also quite cold here this week, down to 33 this morning. Still giving terrible mpg for the first 2-3 miles (or minutes) of driving - still hating the pzev, but it seems that colder weather isn't having as much effect anymore at 3400 miles on the ODO. At this point I would place most blame for bad MPG during short trips/first 2-3 miles almost entirely on the pzev engine management*.

*not a complaint, just my observation! Hopefully SOA will be able to address this via a CPU flash of some sort.
I don't have PZEV and my first few miles are also really bad, typically. They're a little better when it's warm outside, though (or at least the poor mileage at startup lasts less time).

My mileage really dropped this weekend due to constant, strong, gusty, continuous headwinds (30 - 40 mpg) on my long drive yesterday. I think it went from about 33 to 28 mpg.
RxMPLS is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
New Impreza owner, low mpg? stuffedcabbage Newbies & FAQs 34 09-25-2012 11:10 PM
2012 Impreza Reviewed - Whytecliff to Seymour brendan_mac Vancouver Impreza Club Forum -- VIC 16 12-23-2011 02:12 PM
NJ Impreza owners - sighting Dan G General Forum Archive 76 10-06-2000 01:24 AM
Md or Va Impreza owners - I have an Impreza related question. Snoopy General Forum Archive 1 06-05-2000 09:08 AM


All times are GMT -4. The time now is 03:11 PM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2014 Axivo Inc.
Copyright ©1999 - 2014, North American Subaru Impreza Owners Club, Inc.