Why is my Audi A6's engine making strange clicking noises?

I noticed that when I start my Audi A6, the engine makes a strange clicking noise for a few seconds. It eventually goes away but now it's happening more frequently. What could be causing this and how can I fix it?

The clicking noise is likely caused by a faulty valve or lifter in the engine. It's important to have it checked by a mechanic as soon as possible to prevent any further damage.

Check the oil levels in your car. Low oil levels can cause clicking noises in the engine. If that's not the issue, it's best to take it to a professional for proper diagnosis and repair.

I had a similar issue with my Audi A6 and it turned out to be a loose or broken drive belt. Check your drive belt for any signs of wear or damage and have it replaced if necessary.