What Mode Should the Car Air Conditioning Be Set to When Driving on the Highway?

1 Answers
LaBethany
07/29/25 6:30pm
When driving on the highway, it is best to use the external air circulation mode, or start with the internal circulation mode and then switch to external circulation after a while to ensure smooth air flow inside the car. Here are the details: 1. Internal Circulation: The term 'internal' refers to the air inside the car. When the internal circulation mode is activated, the air is confined within the car, and outside air cannot enter. This helps maintain a constant temperature inside the car, as internal circulation significantly reduces the frequency of air exchange between the inside and outside, thereby also lowering fuel consumption. 2. External Circulation: External circulation allows the air inside the car to exchange with the outside air, keeping the interior fresh and providing a comfortable driving experience. Breathing fresh air is also beneficial for health.
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