How Much Fuel Does Using Car Air Conditioning Consume?

1 Answers
FranciscoLynn
07/30/25 1:48am
Car air conditioning accounts for about 20% of the engine's power, so using it consumes a portion of the engine's power and increases fuel consumption. The specific increase in fuel consumption depends on the car's displacement and speed. Typically, for a car that consumes 10 liters of fuel per 100 kilometers, using air conditioning will increase fuel consumption by about 2 liters. Here are some tips for using car air conditioning effectively: Ventilate Before Turning It On: After the car has been exposed to the sun for a long time, open all four doors and the sunroof to allow air to circulate inside the car for 3 minutes. This will quickly lower the interior temperature, making the air conditioning more effective when turned on. Use the Recirculation Mode Wisely: Recirculation mode blocks hot air from outside, creating a sealed space inside the car. This allows the interior air to circulate quickly under the air conditioning, achieving rapid cooling. Once the interior temperature has dropped, it is recommended to switch to fresh air mode every 30 minutes to purify the air inside the car, then switch back to recirculation mode after 5 minutes. Turn Off the Air Conditioning in Time: Turn off the air conditioning 5 minutes before parking. This protects the engine and saves fuel.
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