Volkswagen previously used a resonator tube similar to the Mustang’s in its GTI but has switched to what it calls a “Soundaktor.” This system is like the M5’s, in that an audio file is stored on the car’s computer and then played during certain throttle applications. Unlike the more selective M5 setup, VW’s broadcasts all the noise from under the hood through a dedicated speaker located near the engine’s throttle body. Soundaktor speakers are currently making noise in the GTI, GLI, and Beetle Turbo.

Well... this is all not true in my car's case... Updated research required, I guess.