This is the ideal grade for car air conditioning with the lowest fuel consumption

ArabiaWeather - The Technical Authority for Quality Control recommended that the difference between the car air conditioner temperature and the outside temperature not exceed 6 degrees Celsius; It is a compromise between comfort and economy.

The German authority explained that operating the air conditioner at its maximum capacity leads to high fuel consumption, while closing the air conditioner and opening the windows is not a good idea. Because this leads to increased air resistance and thus increased fuel consumption.

German experts recommend turning off the cooling function and letting the fan continue to operate before the end of the trip, in order to draw moisture from the air conditioner, which may lead to the emission of a musty smell and the formation of fungus inside the car.