What is the interior noise level of a Porsche 911 Carrerra?

Well you won't be listening to the ticking of the clock that's for certain!

My Carrera is 1976 and at highway speeds conversation is possible but with voices raised.

But hey, the car sounds glorious. The flat six engine sounds as good as a V8, (without the slurping appetite for fuel.) You buy a Carrera for excitement, right? Quiet, it aint.

Macsta, Tasmania Australia