Contour Enthusiasts Group Archives Forums General General how much energy does "A/C" save over "MAX A/C" ?

I've always read that running the A/C is more fuel efficient than riding with the windows down, especially at 65 mph since it causes quite a drag.

Same is true on pick-ups. Riding with the tailgate up creates a "bubble" of air in the bed, so the air flows over it. Ride with it down and the bubble is gone and the flat back of the cab creates drag.