Why does my Audi's engine make weird noises?

I recently purchased an Audi and noticed that the engine makes strange noises when I start the car. It's not a constant noise, but it happens often enough to be concerning. What could be causing this and how can I fix it?

It's important to have your car regularly serviced to ensure that all components are working properly. The strange noises could be a sign of a bigger issue that needs to be addressed by a professional mechanic.