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Old 04-07-2012, 10:30 PM   #1
Arseezy
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Join Date: Feb 2012
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Location: Seattle, WA
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Default New 2012 Subaru Impreza 2.0i Terrible gas milage??

So I have put 3,700 miles on my impreza so far, and from 3,000 miles i've been running the **** out of the motor (not abusing but running it).

before doing this i was averaging 32mpg driving like a granny.

after doing this i stopped driving like a maniac and started driving like a granny again, my mpg went from 32mpg a tank to 22.5-24mpg.

I've also noticed whenever I reach higher rpms (over 5k rpm), the car starts smelling like something is burning. Could this be a clue to what's ruining my gas mileage?

Could my negligent driving be the cause of my terrible gas mileage? And I'm wondering if warranty would cover any problems regardless if it was my driving habits or not.

I've google searched and didn't find anything for this fairly new car.

Guidance would be greatly appreciated.
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Old 04-07-2012, 10:38 PM   #2
StatGSR
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97 Legacy EG33 WGN

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may want to try resetting the ecu... idk
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Old 04-07-2012, 10:45 PM   #3
Arseezy
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Also I noticed that for my engine it requires 0W-20 oil. The dealership I went to used 5W-30 (it says so on the sticker). I refered to the owner's manual and it says that 5W-30 is okay to top it off if it's low on oil but should use 0W-20 on the next oil changed. There has been 1500 miles put on since the oil change. Probably the reason why I smell burning?
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Old 04-08-2012, 09:04 AM   #4
blackfang
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2007 Legacy 2.5i SE
98 Z/28, VN 900 custom

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Quote:
Originally Posted by Arseezy View Post
So I have put 3,700 miles on my impreza so far, and from 3,000 miles i've been running the **** out of the motor (not abusing but running it).

before doing this i was averaging 32mpg driving like a granny.

after doing this i stopped driving like a maniac and started driving like a granny again, my mpg went from 32mpg a tank to 22.5-24mpg.

I've also noticed whenever I reach higher rpms (over 5k rpm), the car starts smelling like something is burning. Could this be a clue to what's ruining my gas mileage?

Could my negligent driving be the cause of my terrible gas mileage? And I'm wondering if warranty would cover any problems regardless if it was my driving habits or not.

I've google searched and didn't find anything for this fairly new car.

Guidance would be greatly appreciated.
You honestly think Subaru will warranty a loss of gas mileage because of your driving habits?
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Old 04-08-2012, 05:15 PM   #5
munkis
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rallyarmor.com

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you will want to change back 0w20 asap if they really put 5w30 in.
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Old 04-09-2012, 06:24 PM   #6
Zeeper
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5w30 probably won't hurt the engine but it will hurt the fuel economy. Bring it back and make them replace it with the correct weight synthetic oil (at no charge to you) or file a complaint with SOA.

The main reason they specify 0w20 is for the small bump in MPG's that it offers.

I doubt the motor is burning oil, but get them to change it to the correct oil and see if your mileage bumps up again. The smell is probably oil they spilled somewhere that is burning off. If they can't get the viscosity right, they probably weren't very careful changing it also.
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Old 04-10-2012, 03:29 PM   #7
SpamBot
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Quote:
Originally Posted by blackfang View Post
You honestly think Subaru will warranty a loss of gas mileage because of your driving habits?
Do you mean to tell me that regularly driving your car at over 5,000 RPM will hurt your fuel economy? Next you'll be telling me that wide open throttle starts, driving at 80+MPH, and using the remote start to run the engine for 30 minutes in the driveway will hurt my MPG reading as well. This is obviously Subaru's fault, and should be covered under warranty.



Sometimes I crack myself up.
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Old 04-10-2012, 04:56 PM   #8
sti2010rl
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Are you driving a MT or an auto?
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Old 04-10-2012, 07:25 PM   #9
blackfang
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2007 Legacy 2.5i SE
98 Z/28, VN 900 custom

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Quote:
Originally Posted by SpamBot View Post
Do you mean to tell me that regularly driving your car at over 5,000 RPM will hurt your fuel economy? Next you'll be telling me that wide open throttle starts, driving at 80+MPH, and using the remote start to run the engine for 30 minutes in the driveway will hurt my MPG reading as well. This is obviously Subaru's fault, and should be covered under warranty.



Sometimes I crack myself up.
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