There isn't, in fact mine was quiet as a church mouse & the V8 only became vocal at WOT, even then it was very muted. That's in keeping with the ethos of a non-AMG Mercedes I know, but I love the sound of a V8 so I did do a muffler delete on mine & whilst it does sound great it drones a bit below 2000 rpm. I use my car for long distances sometimes so I'm going to have some minimal silencing added as a compromise.