Does turning off the air conditioner and opening the windows while driving really save fuel?
The answer is “Yes”, and it can save up to 10% of fuel. However, opening the windows while driving is most effective at lower speeds, around 40-50 km/h, where fuel savings are noticeable.
At higher speeds, increased air resistance can counteract the benefits and actually lead to higher fuel consumption. The faster you drive, the greater the wind resistance, which can result in more fuel consumption rather than savings.
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