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 use more gas.
It pays to know these things. | Depends on the speed that you are going. There has been studies done, while I am sure it doesn't apply to every vehicle though. I believe if you are going under 35 mph it is cheaper to ride with the windows down. If you are going above 35 mph it is cheaper to turn the A/C on and roll your windows up. Generally speaking though I am sure....
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