Originally Posted by kayjh

Sitting in the vehicle on the dealer’s lot (located close to a busy street), I was a bit surprised by how much traffic noise makes it into the cabin. This was confirmed during a road test when I heard more road noise than I expected. I wonder whether there is a noticeable difference with the privacy and noise insulating glass spec’d? If the privacy glass isn’t too dark I think I’d specify that option. The dealer says that I would probably notice a difference with the sound insulating glass but he isn’t sure that someone walking off the street would appreciate the option with nothing to compare it to.

The V8 in the GTS is such a great engine and has such a nice sound and with the specially tuned PSE, I think Porsche has it just right. While it is a performance variant of Cayenne, Porsche hasn’t forgotten that customers also want luxury and serenity. The PSE in the off position keeps the exhaust quiet with no rumbling or droning under normal driving. Large throttle inputs will elicit sound from both under the hood and from the tailpipes but not objectionable so (even to my sensitive ears). With PSE enabled, the sound is quite a bit louder but not objectionably so. Steady cruising with PSE on is no louder than with it turned off (to my ears), until you step on the gas.