I have already mentioned that I would definitely like to find out if the car im supposed to buy knocks or not. And what is best way to test it only to check if it still knocks or the owner was considerate enough to the get the software updated.
I would like to stay away from a car that still knocks today and the owner never bothered to get it rectified. What is wrong with that?
The knock was the reason for its discontinuation before.