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using ac or windows down on freeway?

Discussion in '2nd Gen. Tacomas (2005-2015)' started by Twiostaco, Sep 9, 2011.

  1. Sep 9, 2011 at 12:22 PM
    #1
    Twiostaco

    Twiostaco [OP] Well-Known Member

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    So rumor says vehicles use more gas to have Windows down on freeway due to the extra drag. I'm wondering if anybody with scanguage can confirm if it trully uses more gas then running the AC? Thanks
     
  2. Sep 9, 2011 at 12:24 PM
    #2
    saugus

    saugus Well-Known Member

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    Yeah I know that one. I don't buy it.
     
  3. Sep 9, 2011 at 12:26 PM
    #3
    whippersnapper02

    whippersnapper02 Well-Known Member

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    Mythbusters did a show on this. When I had my RX7 I tested this theory. On a long straight road I set the cruise and watched my vacuum gauge. With the windows down there would be less vacuum at the same speed meaning the cruise had to use more throttle to maintain speed. With the AC on the vacuum stayed high.
     
  4. Sep 9, 2011 at 12:29 PM
    #4
    saugus

    saugus Well-Known Member

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    I guess there is a bigtime difference between one driver window cracked half way and both windows all the way down.
     
  5. Sep 9, 2011 at 12:30 PM
    #5
    saundern

    saundern Swerve for nothing

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    I say 'who cares!?' I drive with all the windows down, all the time, on the highway and off; even during the winter when the temp permits
     
  6. Sep 9, 2011 at 12:32 PM
    #6
    whippersnapper02

    whippersnapper02 Well-Known Member

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    Most of the time I roll with the windows up and the vent open so I can hear my music but there are days where the windows just have to go down or else the day seems just wrong.
     
  7. Sep 9, 2011 at 12:35 PM
    #7
    Fink

    Fink Motorboatin' SOB

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    Windows down and music blaring FTW.

    Fink[​IMG]
     
  8. Sep 9, 2011 at 12:35 PM
    #8
    saundern

    saundern Swerve for nothing

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    i like to hear my music too so i just crank it up a few notches
     
  9. Sep 9, 2011 at 12:35 PM
    #9
    newertoy

    newertoy Well-Known Member

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    Windows DOWN--music UP--Better MPG with AC--is a MYTH
     
  10. Sep 9, 2011 at 12:35 PM
    #10
    WhatThePho?

    WhatThePho? Greg Graffin 2016

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    The things required to pull bitches
    On my buddys e36 it has a live mpg needle, doing 75-80 it reads 18-19 with the windows down, with the windows up it reads 23-24. and 21-22 with ac on.
     
  11. Sep 9, 2011 at 12:36 PM
    #11
    sytfu510

    sytfu510 INSTAGRAM: sytfu510

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    I rarely use a/c, Usually windows down or cracked and/or vent open.
     
  12. Sep 9, 2011 at 12:38 PM
    #12
    whippersnapper02

    whippersnapper02 Well-Known Member

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    Explain mythbusters, my findings and other's findings.
     
  13. Sep 9, 2011 at 12:52 PM
    #13
    Jester243

    Jester243 ( ͡° ͜ʖ ͡°)

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    obviously a myth



    :p
     
  14. Sep 9, 2011 at 12:53 PM
    #14
    Twiostaco

    Twiostaco [OP] Well-Known Member

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    Also if you have scanguage please post the mpg for both
     
  15. Sep 9, 2011 at 12:57 PM
    #15
    whippersnapper02

    whippersnapper02 Well-Known Member

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    Damn. It must be.:eek:
     
  16. Sep 9, 2011 at 12:59 PM
    #16
    Manwithoutaplan

    Manwithoutaplan the full Monty

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    i like your style :D>
     
  17. Sep 9, 2011 at 1:02 PM
    #17
    Fink

    Fink Motorboatin' SOB

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    [​IMG]

    I have the headbanger smilie in all my posts for a reason. :thumbsup:

    Fink[​IMG]
     
  18. Sep 9, 2011 at 3:56 PM
    #18
    08TacoTrD

    08TacoTrD Well-Known Member

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    Mythbusters, a teevee show, did an experiment to see what uses more gasoline. I believe they found it doesn't matter but YMMV.
     
  19. Sep 9, 2011 at 4:07 PM
    #19
    whippersnapper02

    whippersnapper02 Well-Known Member

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    Actually they found out that the truck with the AC on used less fuel thus getting better MPG than the truck with windows down. I don't remember what the difference was though. But my own tests with my other car showed better MPG with the windows up. I haven't tried it on the truck yet.
     
  20. Sep 9, 2011 at 7:29 PM
    #20
    Throughhonor

    Throughhonor Well-Known Member

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    I saw this on mythbusters, and from what I remember if you are going over 40 (obviously you are on a freeway) you save gas using the a/c
     
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