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Old 09-22-2012, 10:13 PM   #1901
myrt1987
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Originally Posted by subiTWO View Post
If you *want* better mpg, you'll only get it by slowing down! I've done the variations, and it is the number 1 influence on mpg.
Totally agree with this. But i think 35-40mpg is great for any car.
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Old 09-24-2012, 11:58 AM   #1902
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If you *want* better mpg, you'll only get it by slowing down! I've done the variations, and it is the number 1 influence on mpg. This car does NOT get good hwy mpg. I went for a 140 mile strict hwy drive last weekend, 62 mph actual, 36.3 mpg indicated. Driving 40 miles stop-and-go commute to work this week, 55 mph top speed, I showed 36.0 mpg. I topped 41 mpg indicated one saturday, driving 5 under the limit to work.
But some people will get upper 30s at around 62mph. My car did it once. I think there is something finicky in the engine programming. It was a bit of a cooler day for summer and the results were 10-15% better than normal mileage. (39 instead of 33-36.) I have details in an earlier post) I would love to be able to control the timing to see the effect.
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Old 09-24-2012, 12:11 PM   #1903
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In 17K miles driving almost all highway with the cruise control around 67 MPH, I have beaten 36 MPG exactly one time. I think hills and mountains kill the MPG a lot more than they should. I don't know if it is the CVT or an underpowered engine, but the car has consistently disappointed me with MPG.

My previous daily driver was 300 pounds heavier, had 20% more power, was physically larger, had an extra cylinder, and ran at 3K RPM just to go 70 mph (5-speed manual). That car was only down 2 MPG in real world driving compared to the Impreza.

Also I drive a 2004 Outback with the old 2.5L EJ engine and a boat anchor 4EAT transmission. The Impreza is only doing ~4 MPG better than the Outback, even though it is rated 11 MPG better for highway efficiency.

I drive all the cars the same speed (according to the GPS I use for an accurate MPH reading).

Last edited by ocellaris; 09-25-2012 at 01:19 PM.
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Old 09-25-2012, 03:49 AM   #1904
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Just had the worst tank mileage since May. Maybe it's because it's colder by like 15c but usually my city drive is 8.1 l/100 and I usually get about 630 per tank. This one I got 435 (I would have got about 540 but gas was cheap so I filled early) and calculated it at 9.4 l/100km. Seems really odd.
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Old 09-25-2012, 10:44 AM   #1905
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Yea mpg took a little dive for me since cooler weather hit.
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Old 09-25-2012, 05:05 PM   #1906
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Ok glad I'm not the only one!
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Old 09-25-2012, 10:59 PM   #1907
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Just bought a '13 with the CVT. My 2004 Corolla has over 200k miles on it and is getting about 8 mpg better on the highway. When I bought the Corolla (new)it was rated at 40mpg, they re-rated it in 2008 when they changed the procedure. It was down to 34 mpg highway. So, I expected to get better mpg with the 36 rated Impreza. Not happening. I do only have 1200 miles on it, and drive about 80 on the freeway with a fair amount of hills. Still, the Corolla gets 40 mpg on that road (110 mile empty Interstate commute, one way) with Amsoil throughout.

How much better is it going to get? What kind of oil is the Subaru synthetic?
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Old 09-25-2012, 11:01 PM   #1908
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P.S. I did get 50 mpg on a 55mph test run, but it's not worth slowing down - it's less than minimum wage for the extra time, plus I'd get rear-ended the first month...

What, exactly, is the EPA method for determining mpg?
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Old 09-25-2012, 11:26 PM   #1909
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Quote:
Originally Posted by stevehnm View Post
Just bought a '13 with the CVT. My 2004 Corolla has over 200k miles on it and is getting about 8 mpg better on the highway. When I bought the Corolla (new)it was rated at 40mpg, they re-rated it in 2008 when they changed the procedure. It was down to 34 mpg highway. So, I expected to get better mpg with the 36 rated Impreza. Not happening. I do only have 1200 miles on it, and drive about 80 on the freeway with a fair amount of hills. Still, the Corolla gets 40 mpg on that road (110 mile empty Interstate commute, one way) with Amsoil throughout.

How much better is it going to get? What kind of oil is the Subaru synthetic?
Before I got my '12 Impreza with the CVT, I drove an '03 Corolla, so I know what you are seeing. At the higher speeds, the Corolla got me great mileage (34-37 mpg). Based on my experience so far, that doesn't happen with the Impreza. Just over 7600 miles on it now, fresh off a 750 mile round trip, and the best the Impreza does with the cruise locked in at 75-77 mph is about 30 mpg. Only way to get the advertised 36 mpg highway (or better) is to keep it down in the 50-60 mph range. It's just the point where the CVT and the engine play the nicest together to get the best gas mileage.
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Old 09-26-2012, 05:46 AM   #1910
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Quote:
Originally Posted by cny12owner

Before I got my '12 Impreza with the CVT, I drove an '03 Corolla, so I know what you are seeing. At the higher speeds, the Corolla got me great mileage (34-37 mpg). Based on my experience so far, that doesn't happen with the Impreza. Just over 7600 miles on it now, fresh off a 750 mile round trip, and the best the Impreza does with the cruise locked in at 75-77 mph is about 30 mpg. Only way to get the advertised 36 mpg highway (or better) is to keep it down in the 50-60 mph range. It's just the point where the CVT and the engine play the nicest together to get the best gas mileage.
You also have awd, not fwd. The car is heavier due to extra driveline components, and you are powering all the wheels in some form (not a true 50/50 like the 5sp, but still powering all the wheels
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Old 09-26-2012, 06:15 AM   #1911
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Thank you Flyboy, some people seem to forget that you are driving a 3100lb. car with a AWD system and when you put your foot down on the gas pedal it is driving a front and rear gearbox. It isn't a 2600-2700lb FWD Toyota Corolla or Honda Civic where you easily achieve 38-40mpg. Yes you have to be a little more sensitive to the pedal on the Impreza but 35+mpg is achievable. I would greatly trade the 4mpg for the stability and traction of AWD in snow, rain, mud, dirt etc. and as someone stated before where can you get the best AWD system offered for $20,000? If you live in an area where you don't need worry about heavy snow, rain and dirt/muddy roads then stick with your Elantras, Focus', Civics and Corollas as your money would be better spent on those cars.
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Old 09-26-2012, 08:29 AM   #1912
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The point is the *advertised* fuel economy is not what is achieved. That's why I'm wondering what the actual procedure is that the EPA uses, because "highway mpg" does not appear to be actual highway mpg.
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Old 09-26-2012, 08:54 AM   #1913
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Regardless of the EPA's procedure, I try to remember that the ratings auto manufacturers assign to their cars are relative. They all follow the same EPA procedure. So if the Impreza is rated 36 mpg on the highway, and the Focus is rated 40 mpg on the highway, then it's safe to assume that you (with your own driving style/conditions) would get better fuel economy with a Focus than you would with an Impreza. You might not get 36 mpgs in the Impreza, but you also wouldn't get 40 mpgs if you drove a Focus in the exact same way. However, your Focus mpgs would be higher than your Impreza mpgs.
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Old 09-26-2012, 09:07 AM   #1914
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Okay, then I would say peoples beef is with the EPA testing procedure/guidelines on how they determine fuel economy. This is what I got Sunday traveling on the Long Island Expressway from Exit 63 westbound into Queens Exit 31 to the Cross Island Parkway to Northern Blvd. after a fillup and Trip A reset. It was about 50miles to my friends house and I was going just under 65mph with some hills in Nassau county with the flow of traffic in the center lane. There were times where I hit 70mph and others where I dropped to 60 but for the most part I was light on the pedal and occasionally eyeing the fuel performance gauge (AC and CC off). Even if you subtract 2mpg from the computer I think the fuel economy is believable. I have 1900 miles on the odo and CVT, almost everyone have seen the mileage improve past the 5K mark once the motor is fully broken in. I have no doubt the gauge would given me better numbers if I had over 5K on this motor.


Last edited by uspopo; 09-26-2012 at 09:14 AM.
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Old 09-26-2012, 09:59 AM   #1915
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Quote:
Originally Posted by stevehnm
The point is the *advertised* fuel economy is not what is achieved. That's why I'm wondering what the actual procedure is that the EPA uses, because "highway mpg" does not appear to be actual highway mpg.
In small print underneath that big advertised number it says most people will see x-y mpg

I would also like to know the testing procedure, but i think the speed is in the 60-65mph range, i know they changed it from 55 a few years ago

I found this http://en.m.wikipedia.org/wiki/Fuel_...in_automobiles so unless you drive like it describes from 2008+ vehicles, you probably aren't going to see the mpg rated.

Last edited by flyboy1100; 09-26-2012 at 10:07 AM.
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Old 09-26-2012, 10:02 AM   #1916
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I can avg 38 mpg (calculated), 40mpg (displayed) on my way to work and back. Its not the most spirited drive but i squeeze out every mpg i can.
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Old 09-26-2012, 11:55 AM   #1917
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Originally Posted by sgoldste01 View Post
Regardless of the EPA's procedure, I try to remember that the ratings auto manufacturers assign to their cars are relative. They all follow the same EPA procedure. So if the Impreza is rated 36 mpg on the highway, and the Focus is rated 40 mpg on the highway, then it's safe to assume that you (with your own driving style/conditions) would get better fuel economy with a Focus than you would with an Impreza. You might not get 36 mpgs in the Impreza, but you also wouldn't get 40 mpgs if you drove a Focus in the exact same way. However, your Focus mpgs would be higher than your Impreza mpgs.
You'd think that would be the case, but it isn't. Our lifetime average for the subaru is 29mpg (8900 miles) and 29.4 for the last 10 fill-ups (just to show there isn't much of a winter skew to the numbers). We bought a fiat 500 in May, with just under 5200 miles it has a lifetime average of 37.7 and running average of 38. My wife and I trade off vehicles fairly often and drive very similarly.

Interestingly our dealer called yesterday just to check in (since we don't go there for service...too far away), I mentioned not being happy with the mpg, he started talking about a 15000 mile break-in and to give it a while longer. Whatever. I don't care at this point, it is still great mpg for an awd vehicle, just not as advertised. I do think I'd be getting better numbers with the stick, despite the 10% lower EPA ratings (interestingly the EPA ratings for the fiat are 10% lower for the automatic, complete opposite). I think the CVT needs 10 miles of driving just to get running properly and up to temperature, won't ever buy one of them again that is for sure (as much as I actually like this one).
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Old 09-26-2012, 12:10 PM   #1918
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I mentioned not being happy with the mpg, he started talking about a 15000 mile break-in and to give it a while longer. Whatever.
I like how the "break in" numbers given by dealers keep creeping up over time. This means we can't be too far away from dealers telling people break in is over when the 36K bumper to bumper warranty runs out

Having surpassed 15K miles myself, and recorded every fill up, I don't think the car has a notable break in period after the first full tank of gas or two. I think the MPG gets better when the temps are warm, and goes in the tank when temps are down. This appears to be primarily caused by the CVT not locking the torque convertor until the transmission temp is over 120F, this can take multiple miles in the winter.

Last winter people with manual transmission cars seemed to be less affected by the colder temps.

Last edited by ocellaris; 09-26-2012 at 12:23 PM.
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Old 09-26-2012, 12:22 PM   #1919
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Originally Posted by flyboy1100 View Post
....I would also like to know the testing procedure.....
http://www.fueleconomy.gov/feg/how_tested.shtml

The governments test is explained here. Click the "Detailed Test Information" tab to see speeds and temps etc.
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Old 09-26-2012, 12:30 PM   #1920
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If you are getting 29+ on your Impreza and it seems like it is pretty good for you and your wife's driving habits and whatever mixture of city/highway tossed in. I see that you are not happy that it is almost 6mpg difference on the Impreza's EPA highway claim while the Fiat is within a mile of it's EPA claim. I still think the Impreza gets awesome figures compared to similarly equipped vehicles (2012 Honda CRV, 3300lbs EPA 23/31mpg, 2012 Nissan Rogue, 3275lbs EPA 23/28mpg). Since getting my car with 1900miles on now and with a good mixture of highway and some cruising around town to run errands I am just under 31mpg avg. on my Trip B reading (haven't reset since I bought the car). At this point I am pretty satisfied with the car's mileage given my driving habits and I know the EPA highway is very attainable.

Last edited by uspopo; 09-26-2012 at 12:39 PM.
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Old 09-26-2012, 01:46 PM   #1921
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Originally Posted by uspopo View Post
If you are getting 29+ on your Impreza and it seems like it is pretty good for you and your wife's driving habits and whatever mixture of city/highway tossed in. I see that you are not happy that it is almost 6mpg difference on the Impreza's EPA highway claim while the Fiat is within a mile of it's EPA claim. I still think the Impreza gets awesome figures compared to similarly equipped vehicles (2012 Honda CRV, 3300lbs EPA 23/31mpg, 2012 Nissan Rogue, 3275lbs EPA 23/28mpg). Since getting my car with 1900miles on now and with a good mixture of highway and some cruising around town to run errands I am just under 31mpg avg. on my Trip B reading (haven't reset since I bought the car). At this point I am pretty satisfied with the car's mileage given my driving habits and I know the EPA highway is very attainable.
I agree it is the best AWD vehicle for mpg ratings. It is the whole not living upto its epa ratings that bugs me. This isn't the first car to be that way for us...sadly the other car that sat in the mpg not living upto its claimed mpg was a hyundai accent...not terribly good company for the subaru!

Honestly (and I know I'm in the minority on this one!) I think they could've went with a smaller engine if they wanted high real-world mpg numbers. Our fiat is fun to drive with a stick and 101hp...the subaru only weighs 25% more and yet has 50% more HP. I do like the extra power though, and we won't be trading it in anytime soon.

IT IS still a great car! It has been invaluable while we moved in the summer, and drives like a jackrabbit in the snow. Overall I love it and think we have a perfect pair of cars.
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Old 09-26-2012, 02:22 PM   #1922
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I agree it is the best AWD vehicle for mpg ratings. It is the whole not living upto its epa ratings that bugs me. This isn't the first car to be that way for us...sadly the other car that sat in the mpg not living upto its claimed mpg was a hyundai accent...not terribly good company for the subaru!

Honestly (and I know I'm in the minority on this one!) I think they could've went with a smaller engine if they wanted high real-world mpg numbers. Our fiat is fun to drive with a stick and 101hp...the subaru only weighs 25% more and yet has 50% more HP. I do like the extra power though, and we won't be trading it in anytime soon.

IT IS still a great car! It has been invaluable while we moved in the summer, and drives like a jackrabbit in the snow. Overall I love it and think we have a perfect pair of cars.
I am not convinced that a smaller engine would translate to better MPG in real world driving. I think the 2.0L is a bit underpowered which causes a sharp decrease in MPG once you put passengers in the car or drive through non-flat terrain.

If Subaru offered an new Impreza with a 2.5L engine, I would immediately trade my 2012 in for one.
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Old 09-26-2012, 02:27 PM   #1923
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If Subaru offered an new Impreza with a 2.5L engine, I would immediately trade my 2012 in for one.
Nah.

A diesel engine, on the other hand, would make for a **very** tempting package.
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Old 09-26-2012, 02:38 PM   #1924
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The car makes adequate power for what it is, an entry level, 'economy', AWD car.

The suspension is better than the power IMHO, but you can't really complain about that.

You could always buy a WRX, but you cannot get both the power and the MPG's from Subaru at this point, and likely never will.

They will probably offer slightly more power at about the same MPG in the future, but this car is the future for Subaru, so it may be a bit of a wait...
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Old 09-26-2012, 02:55 PM   #1925
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Nah.

A diesel engine, on the other hand, would make for a **very** tempting package.
+1, DIT Diesel would have been my first choice. FA20 motor from the BRZ my second..
We'll see what is coming in 2015ish...hehe.
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