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Old 06-23-2012, 11:49 PM  
feta_mgp
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Join Date: Jul 2011
Fan#: 88210
Location: Vero Beach, FL
What I Drive: 2012 SGM Focus SEL

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Mythbusters did a test with AC on/off windows open/closed and came out of it it with no difference in MPG, this was an older car, too. I never gave much merit to that theory anyway, and I've never noticed a difference in MPGs with AC on or off a whole tank. I attribute a 1mpg difference (if that) to differing conditions (however minimal they may be.)

Haven't really driven the focus without AC though since Florida is in a state of constant summer aside from 2/3 weeks out of the year at random (i.e. one in December, then the other 2 in March? weird.)

I'll have to take a spin with no AC and see if I can feel a difference in power.
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2012 SGM SEL Sedan 303a w/o Nav
Job 1 built 6/2011
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