What does Volkswagen CleanAir mean?

[EleanorLee]

The CleanAir in cars refers to the air purification function, which is only available in mid-to-high-end vehicles. Moreover, the "CleanAir" button is merely an indicator and cannot be manually pressed. When the driver turns on the internal or external circulation, the CleanAir function will automatically activate. The air purification function can filter harmful gases, ensuring a clean air environment inside the car. The CleanAir air purification function includes: 1. Air conditioning filter with activated carbon: It has an additional activated carbon layer that can adsorb more harmful substances on the filter. Of course, the price of this air conditioning filter is several times higher than that of a regular one. 2. Negative ion air purification: It generates plasma through a high-voltage circuit, which disrupts the protein membrane on the surface of bacteria with positive and negative ions, causing them to lose vitality and die, thereby achieving the goal of eliminating bacteria in the air.