Quote:
Originally Posted by Charles_Main  In todays highly aerodynamic Cars, shutting of the Air conditioning and opening the windows will actually use more Gas than keeping the windows shut and running the Air.
In older cars, that were less aerodynamic, and had Air conditioners that used a lot more power the opposite was the case, but with todays cars when you open the windows at speed you create massive drag on otherwise highly aerodynamic vehicles and actually uses more gas.
It pays to know these things. | For those of us who drive not-so-aerodynamic 4 cylinder trucks with a sliding rear window, running the A/C is still worse. Maybe if I was at the indy oval and someone to draft off of. 
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