Air Conditioner Fuel Consumption
So, your glasses are down and your AC is off so you can save fuel. I bet the only place you are going to save that fuel in today’s cars is ‘in your head, not in your fuel tank’. If your glasses are down and you are driving at speeds in excess of 80km/h (about 55mph), the inside of your car will be working like a big balloon or parachute to pull your car back as air flows in through the windows. This way, the engine will be working harder than it should to keep the car moving at this speed. The car is at its best aerodynamic form when the glasses are up, making it glide effortlessly through the air.
|air flow around a car|
But we are talking of sitting in traffic here. Would you rather sit in traffic with your glasses down, inhaling gas fumes from other peoples exhaust pipes and listening to people cursing? No! I suggest you wind those glasses up, hit that climate control button and hit play on your stereo. That way, you will pass the time quick and go home refreshed, instead of saving money in traffic to spend it on aspirin.
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