This is the most effective way to ventilate a car in the summer

Weather of Arabia - The German Authority for Technical Inspection said that the most effective way to ventilate the car is to open all the doors of the car and the back door - if any -, in order to remove the hot air inside the cabin before starting driving, which facilitates the operation of the air conditioner afterwards.

The authority added that operating the air conditioner does not work for short distances. As he cannot expel the heat during a walk for a few kilometers.

The authority warned against leaving the windows open while the air conditioner is running; As this reduces the cooling efficiency on the one hand, because the cold air escapes to the outside, and increases the car's fuel consumption on the other hand.

Walking with open windows and turning off the air conditioner increases fuel consumption, due to increased air resistance.