On the seventh generation Passat, the wind and front side windows may be installed as an option with a noise-proofing structure. The use of acoustic polymer film between layers of glass instead of the usual plastic film allows to reduce the noise in the passenger compartment by 2-4 dB.
It should be noted that the vehicles on which the noise-absorbing glass are installed have other door control software as well as the attachment of the glass in the door.