Does Using the External Air Circulation Mode Consume More Fuel?
1 Answers
Using only the external air circulation mode in a car does not consume more fuel. Here are the relevant details: 1. Principle: Both the internal and external air circulation modes require the fan to be activated to drive airflow. If the circulation fan is not turned on while the external air circulation mode is engaged, neither the external nor internal circulation will function, and no additional fuel will be consumed. The external air circulation mode allows air to flow between the outside and inside of the vehicle, with the fan drawing air from outside. This means that even if the fan is not turned on, airflow will still enter the cabin while driving, replenishing fresh air. Sometimes, you may notice airflow even when the fan is off—this is because the vehicle is set to external air circulation, allowing occupants to breathe fresh air from outside. 2. Precautions for Using Internal and External Air Circulation in Cars: After entering the car, you should open the windows or activate the external air circulation ventilation system within a short period to introduce fresh air. Avoid driving for extended periods with the windows and doors closed, and never sleep or rest for long durations in a sealed car.