Hi, Just joined the forum as I am looking to join the audi family very soon. I ve been looking to buy a used 08 S3 and I went to see one last week, everything is great except the engine seems to have this tapping noise which I thought its a bit loud for a petrol car. It almost sounds like a diesel if the bonnet is up. The car seem to drive fine though. Can anyone confirm if this is normal? Thanks in advance!