Why does my Audi A1 have a rough idle at startup?

Recently, my Audi A1 has been idling very rough when I start it up in the morning. It usually smooths out after a minute or two, but it's still concerning. What could be causing this issue?

There could be a few possible reasons for a rough idle at startup. One could be a dirty or clogged air filter, which can affect the engine's air-to-fuel ratio and cause rough idling. Another possibility could be spark plug issues, such as worn out or dirty spark plugs. You may also want to check the fuel injectors or fuel pressure regulator for any problems.