Just acquired this new 2019 991.2 C4S PDK last week-end,
I took it for only a brief drive before deciding to get it, since I thought I know there car well, this being my 4th Carrera, and was always happy with them, and never had any significant problems. I had a 991.1 C4S PDK 2 car prior to this one.
When I got it home, into the garage, I noticed a faint noise, like a low decibel rumble, slightly uneven. I did not pay too much attention to it, and attributed it to the radio that was on, which I did turn the volume down previously to 0, not wanting to bother with fiddling the different dials to turn off the radio while I was driving (the 991.2 has a different dashboard control than the 991.1)
The next day, I noticed that faint noise again. After investigation, I arrived to the conclusion that the noise is from the drive shaft in the tunnel running front to back.
Anybody heard any of the drive shaft noise in the 991.2 C4S? Please advise, I think that I do like the engine sound, but not the sound of a drive shaft rotating, and it may get worse when the mile pile up. I think that this is a problem with this unit, not with the design, because it would be unthinkable that Porsche would allow that design defect to stay.
Thanks.

 

I have a Targa, which has all wheel drive as well, and I have not heard that type of noise.

 

Maybe your are hearing the gas tank venting system (or whatever it s call)... Everyone with a new car hears this on occasion . Once in a while I walk into garage at right time and hear one of the cars.

 

bring it back to dealer to have it checked out, drive with a technician to be able to let them know the exact sound your bothered with. New car, take advantage of that warranty.

 

my mistake, I originally thought you meant the car was sitting in garage when you heard sound. What you are describing is any easy thing for them to check. Put car on lift and rotate wheels/shaft. Can t say over computer , don t be surprised if it does make some noise or sound. Not a luxury car by design.
It s a 4 so a few more moving parts there in the driveline.