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Mythbusters test...

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Old Jan 8, 2008 | 10:30 PM
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Default Mythbusters test...
... Is it more efficient (gas consumption) to run your car with the a/c on full blast while driving at 55 mph, or is it more efficient to drive at 55 mph with the windows down and the a/c off?

This is such a corny test as I'm sure we can all guess.. It's on right now, so I'll be shocked if the results come back different from what I'm thinking. (a/c on is less efficient as it uses a lot of fuel as we all know)
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Old Jan 8, 2008 | 10:32 PM
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I've done this....

In town its better to keep the windows down and A/C off, and on the highway its better to run the A/C with the windows up... no doubt.

-Rick
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Old Jan 8, 2008 | 10:35 PM
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Originally Posted by RickyMartinZ28
I've done this....

In town its better to keep the windows down and A/C off, and on the highway its better to run the A/C with the windows up... no doubt.

-Rick
what rick said...





what did mythbusters get.. i love how they busted the tailgate myth on trucks......... twice because so many people didnt believe it.. 2 stock f150s accel on cruise control.. one with the tailgate down got like 20 or 30 less miles and ran out of gas both times.
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Old Jan 8, 2008 | 10:37 PM
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Originally Posted by RickyMartinZ28
I've done this....

In town its better to keep the windows down and A/C off, and on the highway its better to run the A/C with the windows up... no doubt.

-Rick
that's true. but that's a slightly different test.

in traffic or driving slow, so there's little drag, windows down is the way to go. but what about driving @ 55? You'll definitely generate some drag so that's why this is an interesting test
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Old Jan 8, 2008 | 10:41 PM
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Originally Posted by Gun5
what did mythbusters get.. i love how they busted the tailgate myth on trucks......... twice because so many people didnt believe it.. 2 stock f150s accel on cruise control.. one with the tailgate down got like 20 or 30 less miles and ran out of gas both times.
wow! i'm surprised at that too. sweet.. the episode is still on. i'll get back with ya
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Old Jan 8, 2008 | 10:43 PM
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Originally Posted by 6THZ28
wow! i'm surprised at that too. sweet.. the episode is still on. i'll get back with ya
ya something with the tailgate up and the back of the cab make a dead spot of air (less drag) when the tails down the air goes down and presses down on the truck then goes out.. more drag
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Old Jan 8, 2008 | 10:45 PM
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Originally Posted by Gun5
ya something with the tailgate up and the back of the cab make a dead spot of air (less drag) when the tails down the air goes down and presses down on the truck then goes out.. more drag
oooohhh yeah.. i remember that episode now. maybe i was high when i watched it j/j
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Old Jan 8, 2008 | 10:48 PM
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Depends on the length of the bed also... Completely different air current.

-Rick
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Old Jan 8, 2008 | 10:51 PM
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In a "real world" application, having the windows down is about 15% more gas efficient, even at speed, given the test variables
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Old Jan 8, 2008 | 11:25 PM
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so what happened?
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Old Jan 9, 2008 | 12:21 AM
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i just wish gas was free and food as well i hate paying for both lol!!!
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Old Jan 9, 2008 | 01:18 AM
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ive seen this mythbusters before suprisingly i am pretty sure the one with the ac ran out of gas first. They way they did it was toped of two exact same cars and just ran them around a track i cant remeber at what speed but the ac one ran out first
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Old Jan 9, 2008 | 11:07 AM
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no. the one with the AC on ran farther, the one with the windows down had way too much drag they tried it at 55mph i believe.
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Old Jan 9, 2008 | 11:11 AM
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Originally Posted by RojerLockless
no. the one with the AC on ran farther, the one with the windows down had way too much drag they tried it at 55mph i believe.
like i said above, they determined that having the a/c on is 15% less efficient, therefore, 15% more gas consuming than having the windows down..
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Old Jan 9, 2008 | 12:50 PM
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hmm good info thanks....
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Old Jan 9, 2008 | 01:28 PM
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Ill work a little harder and use more gas with ac on
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Old Jan 9, 2008 | 04:18 PM
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lol,
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Old Jan 9, 2008 | 04:41 PM
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Originally Posted by kokingSS
lol,
That sig is HILARIOUS!!!!

Dude I really can't stop laughing @ that.... can i jack it? lol

even funnier - looking at the original post, they're obviously NOT adjustable..
Last edited by 6THZ28; Jan 9, 2008 at 06:42 PM.
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