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Old 04-23-2012, 02:23 PM   #501
nubsub
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Originally Posted by pxpaulx View Post
...

It is the short trips that kill this cars mpg plain and simple, with the extra long warm-up sequence for the engine it kills short trips; hopefully subaru will put out a firmware fix to shorten the warmup sequence.

Also, a tip/something for others to try (CVT owners with paddles). when on roads at freeway speed (55+), whenever I come to a hill I drop the car into 6th gear. This allows you to put your foot down on the gas quite harder than in D without the car thinking you're wanting to floor it. It gives better control to ease your speed lower while traveling uphill (make it up on the down side); if you practice the uphill slowdown to conserve your mpgs already, I think adding the downshift to 6th might give a little better overall conservation.
interesting tip. i'm still trying to learn to use that ECO gauge to adjust my throttle pressure when accelerating and approaching the desired speed. there seems to be a fine line between it thinking you are wanting to accelerate vs keeping the speed constant. i haven't tried cruise control yet since i'm not to my 1k break in cutoff, but i'd like to test that out and see what i see cruise and the CVT do when trying to hold a fixed speed in relatively flat (but not perfectly flat) highway.

(of course, i'm probably overthinking this and minor tweaks in my driving habits may result in no improved mileage and maybe worse!)
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Old 04-23-2012, 02:35 PM   #502
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interesting tip. i'm still trying to learn to use that ECO gauge to adjust my throttle pressure when accelerating and approaching the desired speed. there seems to be a fine line between it thinking you are wanting to accelerate vs keeping the speed constant. i haven't tried cruise control yet since i'm not to my 1k break in cutoff, but i'd like to test that out and see what i see cruise and the CVT do when trying to hold a fixed speed in relatively flat (but not perfectly flat) highway.

(of course, i'm probably overthinking this and minor tweaks in my driving habits may result in no improved mileage and maybe worse!)
The Eco gauge seems a bit too touchy and poorly placed to be of much use for regular adjustments.

I can beat the CVT cruise control by really working at it and manually shifting, but then I am no longer driving "normally" and have to focus too much on tiny adjustments because sometimes manually shifting is worse. A good example of this is on some hills where you could just keep it in 6 and glide up the hill while losing 3 MPH, but letting the car cruise would ramp up the RPMs. There seems to be a very fine line between hills that works on, and hills where would would have been doing better if the car was in D-mode.
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Old 04-23-2012, 02:48 PM   #503
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The Eco gauge seems a bit too touchy and poorly placed to be of much use for regular adjustments.

I can beat the CVT cruise control by really working at it and manually shifting, but then I am no longer driving "normally" and have to focus too much on tiny adjustments because sometimes manually shifting is worse. A good example of this is on some hills where you could just keep it in 6 and glide up the hill while losing 3 MPH, but letting the car cruise would ramp up the RPMs. There seems to be a very fine line between hills that works on, and hills where would would have been doing better if the car was in D-mode.
i hear you on most of these counts (haven't tried cruise yet). i guess having the instantaneous mileage available (wish it were somehow part of the trip computer display in the center of the dash like they have on the Canadian model) seems theoretically like it should help optimize my driving.

i came to develop, what i thought were pretty good habits with my 5spd, and actually have been able to really optimize my driving when i occasionally drive my wife's prius...but this impreza seems to behave differently than the prius which i guess shouldn't come as a surprise.
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Old 04-23-2012, 03:11 PM   #504
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I found that on low rolling hills, keeping it in 6th is great. It really helped keep the mpg up. On steeper, short hills, bliping it into 5th manually to bring the speed up a few was also better than being in drive where sometimes it would even drop into 4th and really drink the gas.

On nearly flat surfaces, or minor grade changes, keeping it in drive was the best option. If you are on a road that won't make the car change gears, drive and cruise control is the best combination.
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Old 04-23-2012, 03:47 PM   #505
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Odo: 2587
Commuting, beach trip
50/50 city/hwy
TripA: 376.2
avg mph: 41
avg mpg: 30.0

Actual:
Gallons: 13.32
MPG: 28.24

TripB: 2466
avg mph: 27
avg mpg: 29.1

I don't know if it was the fuel or what but the MPG numbers on the dash seemed extra low this trip. Beach trip was 2 hours one way 70-75 mph and usually hovering around 30 mpg with cruise control on level to mildly hilly terrain in 75 degree clear weather. I can't find any ethanol blend info on any pumps here in NC.
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Old 04-23-2012, 03:51 PM   #506
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Just as an aside, I noticed on fuely that the 2012 Impreza and Focus were, on average, 2 MPG away from each other, and seeing as the sticker is pretty much 2 MPG off of each other, this makes sense. But also means that it would seem the Impreza is not really that far off the numbers as people think it is.
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Old 04-23-2012, 04:23 PM   #507
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Originally Posted by SZRimaging View Post
Just as an aside, I noticed on fuely that the 2012 Impreza and Focus were, on average, 2 MPG away from each other, and seeing as the sticker is pretty much 2 MPG off of each other, this makes sense. But also means that it would seem the Impreza is not really that far off the numbers as people think it is.
i think you could add the Hyundai Elantra to that list too since it's supposed to be 29/40 rated and i think, last i checked, getting around 29 on fuelly as an average.

on the other hand, if you look at the Honda Civic which i think is 31/38 (?), it's getting much better mileage overall.
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Old 04-23-2012, 04:25 PM   #508
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seriously using 97? i understand maybe bumping up to 91/92 with the compression ratio it should work well, but this engine just doesn't have enough compression/timing/anything else required for that high of an octane, it can't even be all burning which means you are wasting gas
Apparently I'm retarded. I just filled up and double checked the octane on their premium gas, it is only 91 (I think some stations are 92 but I don't remember).

This is in arkansas by the way. It usually gets pretty warm here and is almost always very humid.

Also this fill up was the second time my calculated was higher than the dash. I got 27.72 mpg and the dash said 27.4. Maybe it is getting better? Anyone else get a higher mpg than the dash reads?
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Old 04-23-2012, 06:21 PM   #509
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Quote:
Originally Posted by SZRimaging View Post
Just as an aside, I noticed on fuely that the 2012 Impreza and Focus were, on average, 2 MPG away from each other, and seeing as the sticker is pretty much 2 MPG off of each other, this makes sense. But also means that it would seem the Impreza is not really that far off the numbers as people think it is.
I think most of us are happy with the mpgs in the real world driving; the car can potentially do very well at slower highway speeds, and on the low side the city driving (for me) isn't too bad. There are a couple of people who use their car for lots of very short trips that are vocal about bad mpgs, but they are the minority (and have a valid argument I believe as I also think the engine warm-up sequence is particularly poor in this impreza).

Quote:
Originally Posted by SubyDoWhreRU View Post
Apparently I'm retarded. I just filled up and double checked the octane on their premium gas, it is only 91 (I think some stations are 92 but I don't remember).

This is in arkansas by the way. It usually gets pretty warm here and is almost always very humid.

Also this fill up was the second time my calculated was higher than the dash. I got 27.72 mpg and the dash said 27.4. Maybe it is getting better? Anyone else get a higher mpg than the dash reads?
I wondered about that 97 number! 91 is pretty typical, I just put 92 in mine this morning at a station that is supposed to be non-ethanol in their premium gas only. We'll see if it was worth the 20 cents extra (will need to provide a 5% increase, I'm gonna run it 3 tanks then go back to regular for a few tanks to verify).

I haven't ever had it over-read on the gauge, except if I recall the very first fill I did. Mine is typically 1.5-2mpg on the high side, or about 5%. I also did a drive with my handheld GPS to see how close the distance traveled on the odometer was to actual distance traveled and it was low by almost 2% for my car, sport premium/stock tires (i.e. the car says 100 miles traveled when actual true distance is 102 miles). With my last 7 tanks over or close to 30mpg (last one was 31.4 best so far) I'm pretty happy so far.
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Old 04-23-2012, 06:23 PM   #510
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In California all gas is 87 89 91 Subaru recommends using 93 but since we can't get that in California 91 is fine or you can mix with 100 race gas which is 8.99 a gal
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Old 04-23-2012, 06:25 PM   #511
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In California all gas is 87 89 91 Subaru recommends using 93 but since we can't get that in California 91 is fine or you can mix with 100 race gas which is 8.99 a gal
You mean for a STi right? There is no way an Impreza requires 93 octane.
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Old 04-23-2012, 06:31 PM   #512
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Mines getting excellent mog's on 90 octane non-ethanol. But it does well on good old 87, too.
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Old 04-23-2012, 06:36 PM   #513
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Mines getting excellent mog's on 90 octane non-ethanol. But it does well on good old 87, too.
Only time I get higher than 87 octane is when I go across the border to fill up. Just helping your economy that's all.
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Old 04-23-2012, 07:15 PM   #514
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I only get the 90 because its ethanol-free. And its $3.99 /gal.
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Old 04-23-2012, 07:29 PM   #515
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Let me be more clear any impreza wrx or sti requires 93 but can run 91 where in Cali do u have 90
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Old 04-23-2012, 08:15 PM   #516
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Let me be more clear any impreza wrx or sti requires 93 but can run 91 where in Cali do u have 90
Dude, you know this is a 2012 Impreza (non-WRX non-STI) thread right? I supposed the OP could have been a bit clearer on the thread title. Thread was created to discuss some of the folks' concern with the new Impreza's fuel efficiency. Just FYI...
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Old 04-23-2012, 09:40 PM   #517
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Originally Posted by 2012 polish STI
Let me be more clear any impreza wrx or sti requires 93 but can run 91 where in Cali do u have 90
Let me be more clear... GO AWAY! You're all over the 2012 2.0i Impreza threads rattling off WRX/STI info that nobody wants to hear. There's hundreds of other threads that apply to you. Go find them Polish!
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Old 04-23-2012, 09:50 PM   #518
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considering an upgrade to this from our 2011 forester which averages 18mpg in the city not even an XT!
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Old 04-24-2012, 07:12 AM   #519
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My wife is considering an xv to replace her crv. She really likes my imp but wants the higher ride of a cuv.

So yesterday when I got gas, I had to make a trip home and back to work, pretty much my commute minus 1 mile. I showed 37.5 mpg on the dash after that trip when I normally get 26. The mpgs on this thing are crazy...
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Old 04-24-2012, 12:23 PM   #520
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Originally Posted by hemophilic View Post
My wife is considering an xv to replace her crv. She really likes my imp but wants the higher ride of a cuv.

So yesterday when I got gas, I had to make a trip home and back to work, pretty much my commute minus 1 mile. I showed 37.5 mpg on the dash after that trip when I normally get 26. The mpgs on this thing are crazy...
ok, that is really crazy! less traffic? car is warmed up?
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Old 04-24-2012, 02:20 PM   #521
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ok, that is really crazy! less traffic? car is warmed up?
my bet would be on both of those circumstances - mid-day in an urban drive area would see less traffic, and if the car had been driven 3-5 miles you'd be avoiding the dreaded engine warm-up, haha.
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Old 04-24-2012, 03:07 PM   #522
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I think they could have put the same 2.5fb from the Legacy in and it would have had that extra oomph and in the real world I doubt there would be much of a fuel mileage penalty. You really have to gramma drive this car to get good mpg's, which I usually do. But as soon as you get on it any the fuel mileage goes right out the window. True of any car. But considering how well the OB loaner with a 2.5fb did on gas when I had it, I feel like they should have left the 2.5 un-sleeved and let us have the same hp as the earlier gen, with a lighter, better chassis. Juat my 2
I still like my 2.0

I posted that somewhere else but felt it was better posted here.
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Old 04-24-2012, 03:35 PM   #523
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considering an upgrade to this from our 2011 forester which averages 18mpg in the city not even an XT!
Devo, my wife drives one of these. We brought it to a meet one time, you must not have been there. We are very happy with it. If you want let me know when you are coming to a meet and we can bring it.
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Old 04-24-2012, 04:47 PM   #524
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Picked-up my Sport Premium CVT 4/20 in Charlotte, drove it 200 miles back home and averaged 34.1 mpg according to the computer. I was in heavy traffic about :45 minutes and drove at various interstate speeds. After driving to work two days my average is 28.1 according to the computer, I warm it up until the blue light goes off and go on my way. So far I am pleased.
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Old 04-24-2012, 06:02 PM   #525
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Have you driven a new Legacy or OB? They do darned near as well in real driving. Just saying...
Out of all the new Subarus I've driven I really do like the Impreza the best. The car definitely isn't perfect but its better than the competitors in my opinion.
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