Why does my Audi A7's engine make a strange knocking noise?

I've noticed that when I start my Audi A7, the engine begins to make a knocking sound. It goes away once the engine warms up, but it's concerning. Any thoughts on what could be causing this issue?

There are a few possible reasons for this knocking noise. One common cause could be low oil levels, which can lead to increased friction and noise in the engine. It's also possible that the noise is coming from a faulty valve or a worn-out engine component. The best course of action is to bring your car to a reputable mechanic for an inspection.

I had a similar issue with my Audi A7 and it turned out to be a problem with the fuel injectors. If the injectors are dirty or clogged, they can make a knocking noise when the engine is cold. I would recommend taking your car to a mechanic and having the injectors cleaned or potentially replaced.