Why is my Audi A5's engine making knocking sounds?

I recently noticed that my Audi A5's engine has been making loud knocking sounds. It's especially noticeable when I start the car or when I accelerate. What could be causing this and how can I fix it?

It's possible that your engine is experiencing a misfire, which can be caused by a faulty spark plug or ignition coil. I would recommend getting it checked out by a professional mechanic.

Another potential cause could be low oil levels or old/dirty oil. Make sure to check your oil levels and get an oil change if needed. This could help reduce the knocking sounds.

If the knocking sounds are accompanied by a loss of power or strange vibrations, it could be a sign of a more serious engine issue. In this case, it's best to bring your Audi A5 to a certified mechanic for a thorough inspection.