Hi all, I'm looking to buy my second A3 8V going from a 62 plate 150PS TDI to a 16 plate 184/181PS TDI. I saw one I liked today and inspected it but the engine sounded odd compared to my 150. Almost as if it had some extra knocking. I took a sound clip and wanted you opinions on whether it was normal or a big problem waiting to happen? It had only done 24k miles. What do you think?