Welcome to the North American Subaru Impreza Owners Club Tuesday March 19, 2024
Home Forums Images WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
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.







* As an Amazon Associate I earn from qualifying purchases. 
* Registered users of the site do not see these ads. 
Reply
 
Thread Tools Display Modes
Old 07-12-2012, 08:59 PM   #1476
Zeeper
Scooby Specialist
 
Member#: 299286
Join Date: Oct 2011
Chapter/Region: NESIC
Location: Upstate NY
Vehicle:
2017 Legacy Limited
White

Default

Quote:
Originally Posted by ZionZR2 View Post
The last 3 tank fills all at the same station and same pump at said station, i can add 2.7 gallons after the pump 1st clicks off. I will usually go 100 miles before the first bar turns off. Then Depending on the drive type Which for me is either Normal city or Extreme city. I can get between 10-20 miles per bar through the rest of the tank.
Ya, I get ya, no one here is saying they add 2.7 gallons after the pump clicks off...
* Registered users of the site do not see these ads.
Zeeper is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 07-12-2012, 10:33 PM   #1477
ZionZR2
Scooby Newbie
 
Member#: 319990
Join Date: May 2012
Chapter/Region: TXIC
Location: Austin, TX
Vehicle:
2012 Imp Prm 5D CVT
Dark Grey Metallic

Default

Quote:
Originally Posted by Zeeper View Post
Topping off is dumb and in some vehicles can damage vapor recovery (aka emissions) equipment.

I don't think (actually I am pretty positive, but too lazy to search the owners manual to correct a practice that I don't do) Subaru or any other manufacturer recommends it.

If you are driving in remote areas without gas stations maybe, but for your typical commute it is dumb, just like wanting to force the car into 1st gear above 20mph is dumb.

I'm always left scratching my head and wondering how so many dumb practices are being talked up on this forum. But it's your car, do what you think is excellent.
I am not telling others they should top off.

I am aware of the potential risks with topping off. And most if not all manufactures recommend against it, as well as the gas stations themselves.

The reasons I do it are for consistent fill points and to extend range and time between visits to the gas station. Just a personal preference.

I have topped off for years on several vehicles and never one time has there been an issue.

LET ME SAY THIS AGAIN!!!
THIS IS MY PERSONAL PREFERENCE!
THIS IS NOT A RECOMMENDATION THAT ANYONE HERE SHOULD DO THE SAME!!!
ZionZR2 is offline   Reply With Quote
Old 07-12-2012, 11:35 PM   #1478
Commander Keen
Scooby Specialist
 
Member#: 319157
Join Date: May 2012
Chapter/Region: MAIC
Vehicle:
2012 Impreza 4DR 5MT

Default

What does consistent fill points have to do with it? Does the receipt not show you to the thousandth of a gallon what you pumped in?
Commander Keen is offline   Reply With Quote
Old 07-13-2012, 09:19 AM   #1479
Haunty
Scooby Newbie
 
Member#: 319378
Join Date: May 2012
Chapter/Region: MWSOC
Location: West Central MN
Vehicle:
2012 2.0i Sport Ltd.
Satin White Pearl

Default

Quote:
Originally Posted by Zeeper View Post
Topping off is dumb and in some vehicles can damage vapor recovery (aka emissions) equipment.

I don't think (actually I am pretty positive, but too lazy to search the owners manual to correct a practice that I don't do) Subaru or any other manufacturer recommends it.

If you are driving in remote areas without gas stations maybe, but for your typical commute it is dumb, just like wanting to force the car into 1st gear above 20mph is dumb.

I'm always left scratching my head and wondering how so many dumb practices are being talked up on this forum. But it's your car, do what you think is excellent.
Yeah it says not to do that in the manual, and also right on the back of the fuel door.
Haunty is offline   Reply With Quote
Old 07-13-2012, 09:24 AM   #1480
sgoldste01
Scooby Specialist
 
Member#: 322264
Join Date: Jun 2012
Chapter/Region: Tri-State
Location: Webster, NY
Vehicle:
2012 Impreza Sp 5sp
Obs Blk Prl/Drk Gray Mtl

Default

My VW TDI was the only car that I topped off, because it didn't have the emissions equipment that could be damaged by overfilling.

And when I say topped off in the TDI, I mean topped off. I would literally add fuel until I could see it in the filler neck. Not only did this give me maximum range per tank, but it also made for very accurate fuel economy calculations, since I knew I was filling to the same level each time.

I wish I could do this in the Impreza, but I know that I can't.
sgoldste01 is offline   Reply With Quote
Old 07-13-2012, 11:55 AM   #1481
nubsub
Scooby Specialist
 
Member#: 313575
Join Date: Mar 2012
Location: SF Bay Area, CA
Vehicle:
2012 Impreza 2.0i HB

Default

Quote:
Originally Posted by SleepNMnky View Post
Nubsub wasn't saying he/she did, just asking how someone could fill to 14.2 gallons. I'm always left scratching my head and wondering how so many people feel the need to call people dumb and school all of us on what they assume us little people don't already know.
thanks sleepnmnky!

for the record, i add to the nearest half dollar after the first click. my car consistently gets in the 45-70mi range on that first bar...and with this fill method, i'm around 10gallons filled up when i hit the 1/4 tank left (3 bars).
nubsub is offline   Reply With Quote
Old 07-16-2012, 11:07 AM   #1482
Dill-Ag13
Scooby Newbie
 
Member#: 316535
Join Date: Apr 2012
Chapter/Region: TXIC
Location: The Woodlands, TX
Vehicle:
2007 WRX (Sold 2.0i)
Silver

Default

What's up guys. New here to NASIOC. Have a '12 Impreza Sport Premium CVT. At about 2,500 miles right now and averaged 28.5 my last fillup. Lifetime so far is only about 25.5.
Dill-Ag13 is offline   Reply With Quote
Old 07-16-2012, 11:40 AM   #1483
auskip07
Scooby Specialist
 
Member#: 315643
Join Date: Apr 2012
Chapter/Region: South East
Location: Atlanta Ga
Default

Quote:
Originally Posted by stien View Post
I've been getting 39mpg mixed reliably by not stepping on it too much (manual hatch, '12, premium pkg with no racks). Love this car. I've even been able to get 46 by really, really grannying it.
your computer must be way off. Is this on a full tank?

after 150 miles of city driving with an exstimated 25 mpg. Spent 4 hours on the Hwy and it got up to 30.5 on the computer

another 3 hours of really pushing it 80 mph on the highway netted me 30.9 on a new tank (200 miles or so)

Last edited by auskip07; 07-16-2012 at 02:33 PM.
auskip07 is offline   Reply With Quote
Old 07-16-2012, 11:44 AM   #1484
Dill-Ag13
Scooby Newbie
 
Member#: 316535
Join Date: Apr 2012
Chapter/Region: TXIC
Location: The Woodlands, TX
Vehicle:
2007 WRX (Sold 2.0i)
Silver

Default

I've gotten 41 MPGs sustained over a 10 mile trip down I-45
Dill-Ag13 is offline   Reply With Quote
Old 07-16-2012, 12:18 PM   #1485
nubsub
Scooby Specialist
 
Member#: 313575
Join Date: Mar 2012
Location: SF Bay Area, CA
Vehicle:
2012 Impreza 2.0i HB

Default

i'm at 3300+ miles now and probably stating the obvious, but here are my cumulative observations (all guesstimates, if numerical)

- AC hits mpgs by 2-3 mpg
- mileage really suffers going up and down hills (even with manual shifting)
- really poor mileage in stop and go traffic
- great mileage while cruising on flat ground
- mileage starts to dive above 65mph
- best correlation i see in mileage is inspecting "average speed" reported by car computer (at least for mixed driving)
- car takes about 4miles to warm up

my lifetime gauge mileage on the computer is now 29.7mpg. fuelly is 28.2mpg, but that doesn't account for the 3% odometer error which, if accounted for, brings it up to 29.0mpg. the computer is still an overestimate, but i like to use it as a slightly optimistic, but not unrealistic look at roughly how the car is doing. my lifetime average speed is around 27mph (haven't checked in a while, so i might be off, but i think that's about right).
nubsub is offline   Reply With Quote
Old 07-16-2012, 01:19 PM   #1486
Haunty
Scooby Newbie
 
Member#: 319378
Join Date: May 2012
Chapter/Region: MWSOC
Location: West Central MN
Vehicle:
2012 2.0i Sport Ltd.
Satin White Pearl

Default

Quote:
Originally Posted by Haunty View Post
My last fill up was 34.0mpg almost 2 mpg better than my previous best, no difference in driving, and even using AC more. Hoping it continues.
Well it didn't continue, my last fill up it was back to normal. I don't know what it was, for a while my mileage was off the charts, and it started right after I filled up at the same gas station I always go to. Only thing I did differently was floor it out of the gas station in manual mode and held it at high rpm longer than usual, and accidentally hit downshift instead of up shift once, which made it lurch a bit before it upshifted itself and then went into some state where I couldn't accelerate at all for a few seconds, surprised it let me downshift.
Haunty is offline   Reply With Quote
Old 07-16-2012, 01:22 PM   #1487
AAMursu
Scooby Newbie
 
Member#: 75244
Join Date: Nov 2004
Chapter/Region: MWSOC
Location: Minnesota
Vehicle:
2013 WRX Base
Other Blue

Default

I just finished my first tank of gas with my manual Impreza 2.0I 4door and I got around 31mpg.
I was very pleased. I didn't even drive like a grandma the whole time.
AAMursu is offline   Reply With Quote
Old 07-16-2012, 02:32 PM   #1488
auskip07
Scooby Specialist
 
Member#: 315643
Join Date: Apr 2012
Chapter/Region: South East
Location: Atlanta Ga
Default

Quote:
Originally Posted by Dill-Ag13 View Post
I've gotten 41 MPGs sustained over a 10 mile trip down I-45
Im sure everyone on here would get that if they found a particular stretch of 10 miles with a slight down hill slope.

This is the reason you report full tanks of gas. in 300 miles it gives you a chance to expereience a wide variety of grades.
auskip07 is offline   Reply With Quote
Old 07-16-2012, 02:36 PM   #1489
ocellaris
Scooby Specialist
 
Member#: 302559
Join Date: Nov 2011
Default

Quote:
Originally Posted by auskip07 View Post
Im sure everyone on here would get that if they found a particular stretch of 10 miles with a slight down hill slope.

This is the reason you report full tanks of gas. in 300 miles it gives you a chance to expereience a wide variety of grades.
^This. I can hit close to 80 MPG down some 10 mile stretches of highways in Pennsylvania. Doesn't mean its really a good measure of anything, since I was burning gas like a train to get up the other side of that mountain.

Even one tank of gas can have a fairly big shift in the MPG, based on the filling station used, the outside air temp, and the filler nozzle.
ocellaris is offline   Reply With Quote
Old 07-16-2012, 02:37 PM   #1490
Dill-Ag13
Scooby Newbie
 
Member#: 316535
Join Date: Apr 2012
Chapter/Region: TXIC
Location: The Woodlands, TX
Vehicle:
2007 WRX (Sold 2.0i)
Silver

Default

Just reporting what I've found. I turned the A/C off and set cruise to 65. It wasn't flat. It wasn't downhill. It was relatively hilly.

I've also held 37 over a 60 mile round-trip commute.

Full tanks suck though and are around 28.5 due to my lively driving in stop and go
Dill-Ag13 is offline   Reply With Quote
Old 07-16-2012, 02:50 PM   #1491
auskip07
Scooby Specialist
 
Member#: 315643
Join Date: Apr 2012
Chapter/Region: South East
Location: Atlanta Ga
Default

Quote:
Originally Posted by Dill-Ag13 View Post
Just reporting what I've found. I turned the A/C off and set cruise to 65. It wasn't flat. It wasn't downhill. It was relatively hilly.

I've also held 37 over a 60 mile round-trip commute.

Full tanks suck though and are around 28.5 due to my lively driving in stop and go
from my expereince TX is anything but hilly LOL

Oh and Welcome to the SEC. From an Auburn Alum
auskip07 is offline   Reply With Quote
Old 07-16-2012, 02:55 PM   #1492
Dill-Ag13
Scooby Newbie
 
Member#: 316535
Join Date: Apr 2012
Chapter/Region: TXIC
Location: The Woodlands, TX
Vehicle:
2007 WRX (Sold 2.0i)
Silver

Default

Thanks man!

You are correct, Texas isn't hilly around Houston. But I-45 as it goes over surface streets at various exit-points is actually hilly enough to do some MPG damage.

Take my findings with a grain of salt. After my first OC I'll start tracking on a tank-to-tank basis and maybe post some "samples" up here.
Dill-Ag13 is offline   Reply With Quote
Old 07-16-2012, 08:17 PM   #1493
thom52
Scooby Newbie
 
Member#: 309257
Join Date: Feb 2012
Chapter/Region: NWIC
Location: Kirkland WA
Vehicle:
2012 Imp 5D Prem CVT
Marine Blue

Cool

Quote:
Originally Posted by Dill-Ag13 View Post
Thanks man!

You are correct, Texas isn't hilly around Houston. But I-45 as it goes over surface streets at various exit-points is actually hilly enough to do some MPG damage.

.......
oooooooo! Monster hills! Surface street overpasses!!!! yeegawds, its virtually the himalayans.....

Just got back from a nice weekend with my wife in Leavenworth WA driving from Seattle area. We did a loop including Stevens(4000ft) , Blewitt(3000ft) and Snoqualmie(3000 ft) passes, a few miles of gravel road, throw in some 50-60mph mtn roads, a few 20 mile stretches of 30mph country roads, some of that on gravel, and the coup de grace, getting stuck in two NASTY traffic jams, one taking an hour to go a couple miles between a couple of towns on flat roads with the instantaneous gage reading about 7mpg, and another stuck in stop and go for a bunch of miles on what should have been 70mph freeway to get around a winnebago that burnt to the ground(leaving a hole in the pavement).
Per car gauge (usually 1.8mpg optimistic), 34.5mpg for trip.
Can't complain about that.

Finally getting UP to 21mpg for short hop city driving though, which is most of what my wife uses it for. Thats a bummer.

Obviously I have to borrow the car more for my long drives to hikes. (too bad it doesn't have more clearance), its darn fun car to drive in the mountains and has PLENTY of zip, if you know how to drive a small 4 banger, which is mostly what I have owned.

I was playing around a bit more with upshifting the CVT when coasting on this trip. (Yes I had the TSB's done)
thom52 is offline   Reply With Quote
Old 07-17-2012, 12:05 PM   #1494
nubsub
Scooby Specialist
 
Member#: 313575
Join Date: Mar 2012
Location: SF Bay Area, CA
Vehicle:
2012 Impreza 2.0i HB

Default

good stuff, thom.

how many miles do you have on the car now?

has your starting problem gone away?

i'm glad to hear you are finally creeping into the 20s. as i've experienced different things in my car now, i can see how low 20s would be the norm for short hop driving in a "real city" (as opposed to my suburbia city driving which yields me in the mid 20s). too many accelerations every 0.1 miles like i encountered in san francisco this weekend really kills the mileage.
nubsub is offline   Reply With Quote
Old 07-17-2012, 10:10 PM   #1495
53x12
Scooby Specialist
 
Member#: 206332
Join Date: Mar 2009
Location: In a tent
Default

Quote:
Originally Posted by Commander Keen View Post
What does consistent fill points have to do with it? Does the receipt not show you to the thousandth of a gallon what you pumped in?
Consistent fill points since each station might use a different pump/shut off level.
53x12 is offline   Reply With Quote
Old 07-17-2012, 10:19 PM   #1496
deanm11
Scooby Newbie
 
Member#: 303800
Join Date: Dec 2011
Location: Northern NJ
Default

Quote:
Originally Posted by nubsub View Post
i'm at 3300+ miles now and probably stating the obvious, but here are my cumulative observations (all guesstimates, if numerical)

- AC hits mpgs by 2-3 mpg
- mileage really suffers going up and down hills (even with manual shifting)
- really poor mileage in stop and go traffic
- great mileage while cruising on flat ground
- mileage starts to dive above 65mph
- best correlation i see in mileage is inspecting "average speed" reported by car computer (at least for mixed driving)
- car takes about 4miles to warm up

my lifetime gauge mileage on the computer is now 29.7mpg. fuelly is 28.2mpg, but that doesn't account for the 3% odometer error which, if accounted for, brings it up to 29.0mpg. the computer is still an overestimate, but i like to use it as a slightly optimistic, but not unrealistic look at roughly how the car is doing. my lifetime average speed is around 27mph (haven't checked in a while, so i might be off, but i think that's about right).
-- Agree with over 65mph. I'd love to know why.. the c/d I've seen quoted for the hatch is 0.31- not bad. I would have thought it would have hung in there better than it does.

-- Disagree with the assessment of impact of A/C. I don't have hard scientific #s but from some usage I estimate closer to 1-1.5mpg.
deanm11 is offline   Reply With Quote
Old 07-18-2012, 09:39 AM   #1497
DrummerDaveB
Scooby Newbie
 
Member#: 67721
Join Date: Aug 2004
Default

1100 miles now on my Sport Premium Manual.

1st couple tanks - about 28mpg (per actual mileage/gallon calc, not computer).

Mixed driving - Commuting to work, mostly interstate there, and mostly city back (due to construction).


Watching the computer mpg calc, I see a big hit everytime the a/c compressor kicks on - about 3-4 mpg.
DrummerDaveB is offline   Reply With Quote
Old 07-18-2012, 09:49 AM   #1498
Haunty
Scooby Newbie
 
Member#: 319378
Join Date: May 2012
Chapter/Region: MWSOC
Location: West Central MN
Vehicle:
2012 2.0i Sport Ltd.
Satin White Pearl

Default

Quote:
Originally Posted by deanm11 View Post
-- Agree with over 65mph. I'd love to know why.. the c/d I've seen quoted for the hatch is 0.31- not bad. I would have thought it would have hung in there better than it does.

-- Disagree with the assessment of impact of A/C. I don't have hard scientific #s but from some usage I estimate closer to 1-1.5mpg.
I haven't noticed that big a hit if any with the A/C either, maybe it does more for city driving, but not highway driving it seems.

As for speed, my best tank included cruising 70mph for at least 100 of the miles, with A/C blasting
Haunty is offline   Reply With Quote
Old 07-18-2012, 10:18 AM   #1499
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 Haunty

I haven't noticed that big a hit if any with the A/C either, maybe it does more for city driving, but not highway driving it seems.

As for speed, my best tank included cruising 70mph for at least 100 of the miles, with A/C blasting
The A/C when idling is what eats the mpg. So in stop & go or city driving where you sit at a light for a while I've watched the numbers go down. On these 90+ days if I used my remote starter to cool the car down for a minute or two before getting in, it's a HUGE hit. I love the creature comforts that my remote starter provides, but it's certainly not MPG friendly, & less so in this car than others I've owned.

But Haunty, I also think while driving highway it doesn't seem to affect it.
SleepNMnky is offline   Reply With Quote
Old 07-18-2012, 10:23 AM   #1500
Haunty
Scooby Newbie
 
Member#: 319378
Join Date: May 2012
Chapter/Region: MWSOC
Location: West Central MN
Vehicle:
2012 2.0i Sport Ltd.
Satin White Pearl

Default

Quote:
Originally Posted by SleepNMnky View Post
The A/C when idling is what eats the mpg. So in stop & go or city driving where you sit at a light for a while I've watched the numbers go down. On these 90+ days if I used my remote starter to cool the car down for a minute or two before getting in, it's a HUGE hit. I love the creature comforts that my remote starter provides, but it's certainly not MPG friendly, & less so in this car than others I've owned.

But Haunty, I also think while driving highway it doesn't seem to affect it.
Yeah that would make sense. Cold starting even without the AC on hits the MPG a bit.
Haunty 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 36 08-28-2017 07:10 AM
2012 Impreza Reviewed - Whytecliff to Seymour brendan_mac Vancouver Impreza Club Forum -- VIC 16 12-23-2011 01:12 PM
NJ Impreza owners - sighting Dan G General Forum Archive 76 10-06-2000 12:24 AM
Md or Va Impreza owners - I have an Impreza related question. Snoopy General Forum Archive 1 06-05-2000 08:08 AM

All times are GMT -4. The time now is 07:30 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2024 Axivo Inc.
Copyright ©1999 - 2019, North American Subaru Impreza Owners Club, Inc.

As an Amazon Associate I earn from qualifying purchases.

When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission
Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.