Proof Subaru lied about MPG!
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This is a discussion on Proof Subaru lied about MPG! within the Everyday Impreza Talk forums, part of the Community - Meet other Enthusiasts category; Gotcha!...

  1. #1
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    Proof Subaru lied about MPG!

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  3. #2
    Registered User irickchad's Avatar
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    I don't get it.

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    Quote Originally Posted by irickchad View Post
    I don't get it.
    let me guess, he has a CVT and it gets better than Subaru said on their sticker

    explanation is found here (got to the 22 minute mark where they talk about fuel economy):

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    Sticker reports 28 mpg for the CVT and manual. Thought getting it to 36 was amusing...

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    Quote Originally Posted by epxwrx View Post
    Sticker reports 28 mpg for the CVT and manual. Thought getting it to 36 was amusing...
    really? huh? I found 25 MPG HWY for the CVT and 28 MPG HWY for the manual on the fueleconomy.gov website:

    CVT
    Fuel Economy of the 2015 Subaru WRX

    manual
    Fuel Economy of the 2015 Subaru WRX


    in any case, I can't wait till mine arrives so I too can be amused by the fuel economy and other features of this vehicle

  7. #6
    Registered User irickchad's Avatar
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    How long did you drive like this? I get 27-30 in my Stage 2 WRX sometimes, and when it was stock sometimes I'd get 30-33, when the sticker claims like 22-25 so it must be a fad among them, ha.

  8. #7
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    Just do a quick google search, you'll find that the MPG gauge reads much higher than the actual consumption. 36mpg is likely close to 30mpg in reality, and this isn't surprising considering the manufacturer's spec has always been exceeded under certain requirements.

    There also seems to be a fault in the logic when driving very mountainous conditions. There was one point when my STi (rated at 23 highway) was claiming 33mpg over 40 miles as I was driving Skyline Drive. In reality, the consumption was 25mpg.
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    Quote Originally Posted by zax View Post
    Just do a quick google search, you'll find that the MPG gauge reads much higher than the actual consumption. 36mpg is likely close to 30mpg in reality, and this isn't surprising considering the manufacturer's spec has always been exceeded under certain requirements.

    There also seems to be a fault in the logic when driving very mountainous conditions. There was one point when my STi (rated at 23 highway) was claiming 33mpg over 40 miles as I was driving Skyline Drive. In reality, the consumption was 25mpg.
    ^^this has been my experience with other vehicles

    what I trust is setting/re-setting the trip odometer and calculating the mileage at fuel-up, I use an app on my smartphone from fuelly.com to record and track fuel economy

    Subaru WRX Mileage | Fuelly

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    Yep, what others said - I find that doing short city jaunts with the WRX result in some 23-25 MPG readings in reality, even though the WRX fuel estimator is saying 28+.

    If I baby it and drive highway a lot more, I'm sure I can get 30-32 MPG, but then that's outside of my normal scope of driving habits. Soooo...
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  11. #10
    Registered User 96accord's Avatar
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    I agree with Zax. Mine isn't 6 MPG off but every fillup it's been around 2 MPG lower than the digital display.

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    OMG WTF MainFrame's Avatar
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    Fill the tank (set trip meter), drive until the light comes on, fill the tank again.. divide miles on the trip meter by gallons it took to fill up. In my bugeye I was able to get as high as 32mpg averaged over about 440 miles of mixed driving (and as low as 16mpg, depending on how I drove).

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    Either way that is stupid good considering the cars performance capabilities. OP how would you describe your driving style?
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    Quote Originally Posted by rexxx0486 View Post
    Either way that is stupid good considering the cars performance capabilities. OP how would you describe your driving style?
    Looking at the bar graphs in the OP's pic, "glacial" might be a suitable adjective.

    Apparently, Honda's MPG calculation algorithm has a hidden mode which allows recalibration. You can enter in a linear scaling coefficient and offset based on real-world trip milage / gallons purchased. I wonder if Subaru has such an option buried in the service menus.
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    Registered User 96accord's Avatar
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    Quote Originally Posted by rexxx0486 View Post
    Either way that is stupid good considering the cars performance capabilities. OP how would you describe your driving style?
    Why is it stupid? It should not be 2 MPG (or whatever) off for normal driving!

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    How did you get 36 lol!!!? I have averaged 20 since I bought my 2015 STI.

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