I did it on several MB. All of them would not rev on idle much above 2000 rpm and they will up shift about 600 rpm before redline. When I hold the gear by manual shifting, it will get closer to redline, but it will not pass it.
In neutral, as I said there is a limiter, just to protect the engine but on many Benz holding it in a low gear will let you pass the red line.
"I am enclosing two tickets to the first night of my new play; bring a friend, if you have one
- George Bernard Shaw to Winston Churchill.
"Cannot possibly attend first night, will attend second ... if there is one
- Winston Churchill, in response.