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Old 10-17-2013, 07:21 PM   #376
flyboy1100
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Quote:
Originally Posted by ocellaris View Post

Plenty of reason to blame the EPA though. Pretty silly they do anything other than test with readily available E10 and E0 blends.

Heck I don't think I have filled up with E0 in three years. Maine and Florida recently passed laws attempt to ban Ethanol in fuel, however those laws are contingent on many other states doing the same thing, and that is unlikely to happen.
I agree, but still if you didn't do the research into how the numbers come to be, you can't blame the testing.

Nd just mandated all fuel except premium must contain 10%, and as such, my mpg has dropped 10%. Dumb
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Old 10-18-2013, 10:08 AM   #377
G-Omaha
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Same with NE and IA..
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Old 10-18-2013, 11:38 AM   #378
Angelus911
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I average around 31.8-32 mpg in mixed driving, which I'm more than happy with. Now I need to convince myself to stop watching the damn Eco gauge and enjoy driving my car
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Old 10-18-2013, 05:53 PM   #379
2012subisport
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Originally Posted by flyboy1100 View Post
Your odometer is off too...

And you can't blame the epa testing, they use a special blend of fuel that would never be found anywhere, especially CA.

Not sure about the odometer as I have never checked it. I know the speedometer is off when it reads 70 I am actually going 68MPH. Checked by several different radar check areas. So makes sense odometer would be off too.
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Old 10-20-2013, 09:03 AM   #380
jay bee
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Keep in mind the throttle body is not always linear. 25% gas pedal could be 30% throttle. I don't know this for sure on my Subie but it feels like it.
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Old 10-21-2013, 12:37 PM   #381
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I get 38 highway with very reasonably real world conditions. 60 in a 55, some energy wasted because of braking, having the engine warm up. Defroster on about 1/2 the time.

However I get 20-21 city on reasonably real world conditions. On average 1/3 red lights, speed 40mph... I can't complain myself because I drive 4 miles a day anyway so I get through a week with almost no fuel loss.
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Old 10-23-2013, 08:27 AM   #382
zero_dgz
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According to the doohickey on my dash (since my car has one I've decided I'm too lazy to do math and/or calculate the "right" way) I get about 35-point something around town, which in this area includes a nontrivial amount of short highway hops. When I am working (read: Driving like an idiot) I tend to score 28-30. I took a cross-country road trip not long after I bought my Impreza, and ended up averaging 42on the highway in the flat old Midwest, and this was with a stupid floppy Pep Boys roof box on top, too... I was, however, driving pretty conservatively at the time because I was sort of broke! Climbing the Rockies resulted in considerably poorer mileage.

Fun fact: People look at you funny if you rock up in an overstuffed Impreza hatch with a roof box on it in a Wal Mart parking lot someplace in Wyoming, then three scruffy looking guys get out and do an oil change.
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Old 11-24-2013, 05:24 PM   #383
zezty
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ah, I have not posted in a while...I have a 2012 Sport premium 5m, with 22k miles on it. What I have noticed on the MPG issue on this thread, it seems each car/driver has their own numbers. I purchased my car used with 10k miles on it, and up until the 15k mile mark was able to achieve the EPA posted+, at one point on state highways-speed under 60mph-revs below 3k-AVG MPG showed 42mpg with over 420miles on the tank. Now the difference after 15k-22k has shown a considerable drop in mileage, one problem was the tires, not in the air pressure, but in the tread wear, as the tires wore the mpg dropped, only by 2-3mpg, but I did notice it. My problem now is, after a turnpike trip with speeds in the rollercoaster range of 60-80 (speed limit 75), at 222miles I used 19 gallons of gas, I could watch the gas gauge drop every 18miles, this trip required 3 gas stops, and me dropping the speed to 55 on the last 60miles because I was afraid of running out of gas on the turnpike (only 3 service stations on said turnpike). This recent trip was the second of such that I noticed the drop in economy, previous was 9gallons at 142miles driving in town. I just put new tires on the car to see the difference, and the AVG MPG gauge jumped up above 30mpg, a reading I have not seen since purchasing the car. The only problem is, as the numbers increased, the actual mileage decreased as with the fuel. Now I do understand that my foot, the fact of a 5 speed, wind/hills, all have a bearing on the actual mpg, but 11-15mpg is not what I expected, especially after owning a Dodge Nitro 4.0 that got the same (now) mileage as my Impreza.
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Old 12-06-2013, 07:49 PM   #384
2012subisport
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Quote:
Originally Posted by 2012subisport View Post
The computer on my 2012 Impreza Sport is ALWAYS 2 to 3 MPH better than what I am actually getting. I have run no less that 10 checks on consecutive fill-ups. It's always saying I am getting better mileage. I take trips to LA on HWY 5 from north of Sacramento and averaging 70 MPH with cruise control. Best I have gotten was 29-30 MPG (after fill-ups) and 32-33 per the computer. I have never seen the computer go better than 33 on any test. Around town and I drive very conservatively I get 26-27 on the computer. Not bad enough the EPA rating is exaggerated, the constant exaggerating computer has to be something done on purpose. I bet it is the same on all the Impreza models for the past couple of years.

And to add insult to the computer, I was at Folsom Lake fishing today. The high temperature for the day was 47 degrees. My car temperature from it's computer says 56. Not even close. I did a recheck an hour later and again it was off by almost 10 degrees. I have NO faith in either the mileage or temperature readouts in my car which has under 12,000 miles.
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Old 12-06-2013, 08:24 PM   #385
flyboy1100
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Quote:
Originally Posted by 2012subisport View Post

And to add insult to the computer, I was at Folsom Lake fishing today. The high temperature for the day was 47 degrees. My car temperature from it's computer says 56. Not even close. I did a recheck an hour later and again it was off by almost 10 degrees. I have NO faith in either the mileage or temperature readouts in my car which has under 12,000 miles.
All can be adjusted for free at the dealer
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Old 12-06-2013, 10:13 PM   #386
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Quote:
Originally Posted by 2012subisport View Post
And to add insult to the computer, I was at Folsom Lake fishing today. The high temperature for the day was 47 degrees. My car temperature from it's computer says 56. Not even close. I did a recheck an hour later and again it was off by almost 10 degrees. I have NO faith in either the mileage or temperature readouts in my car which has under 12,000 miles.
You know FOR SURE that was the high for the day in your exact area, or that's just what they said on the news?
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Old 12-14-2013, 12:04 PM   #387
2012subisport
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Originally Posted by sc00by4life View Post
You know FOR SURE that was the high for the day in your exact area, or that's just what they said on the news?
For sure. I have since checked it and sometimes it is very close. Other times it's way off.
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Old 08-09-2019, 11:20 PM   #388
JYoung1994
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Default Probably an outlier

I might be an outlier but my commute is 34 miles each way, with 10-12 stoplights/signs. For the past 15,000 miles I have averaged 40.2MPG with the 2.0 and 5 speed. I do not exceed 61, coast to stop signs/lights, skip gears/minimize rpms and anticipate as much as possible to minimize accelerating and maximize deceleration.

When I had a 5 mile 8 stop sign commute I averaged 31.

With factory rims and tires I get about .3mpg more. Iím currently running 225/50/17s which are an inch taller and an inch wider than factory.

With my roof rack I averaged about 4mpg less.

Prior to my short block being replaced due to the oil consumption lawsuit I was lucky to see 28mpg without a roof rack and 26 with.

At the end of the day the engine/manual trans combination is solid when properly maintained and driving conditions/habits are good.

Driving habits and conditions are the major drivers of fuel economy. The condition of the vehicle/engine, plays a lesser but still important part. Engines that have not been rebuilt/replaced and consume oil are going to burn more fuel. Lack of spark plug maintainence will hurt drastically as well. Also running a bottle of octane booster/cleaner in the fuel every 4-6 tanks stabilizes my fuel mileage. I see decreases in fuel economy after 6-10 tanks and major (2-3mpg) after 10+ tanks.

For every 5mph over 60 I see a 1.5-2mpg decrease in fuel economy until 70. And about 2.5-3mpg difference between 70-75. If I consistently drive 80mph 32 is a stretch to hit.

Ps - all mpg calculations are based on fuel added and miles driven not the computer calculation (which does tend to be accurate even with oversized tires). The exception is speed based mpg decreases which I relied on the computer.
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