I am seeking help from anyone who may have experienced similar noise. I purchased this 2009 Cabriolet for my wife 3 weeks ago. Since I then I have done new spark plugs, oil change, and coolant flange. I am away for work and a week ago my wife sent me this video of the noise it started to make. Local mechanic has no idea what it could be. It only happens when the car is driven longer than 20 minutes. No CEL or dash lights either. Any help or point in the right direction would be great. Also any recommendations on Audi San Diego mechanics.

Thanks

 

This problem is very common among car owners. The engine knocking is the impact of one part on another, and it means very high loads in the places of their contact, which means that there is something wrong in the work.
I am not an auto mechanic, but I like to learn a lot, read a lot of articles, that was just the last time I read was the answers to the famous development director of the latest game Forza, where he answered popular questions about cars and their internal structure. Here https://www.pistonheads.com/news/gen...answered/24511you can read about many of the problems in the engine, and not only, I think it will be useful and interesting for you.