Why does my Audi A2 have a rough idle when it's cold outside?

I have noticed that when it's especially cold outside, my Audi A2 seems to idle rough and almost stall at times. It doesn't happen when it's warm out, is this a common issue? Is there a way to fix it?

This could be due to the temperature affecting your engine's performance. One possible solution is to use a winter-grade engine oil that is specifically designed for colder weather. This can help improve the engine's lubrication and reduce rough idling.

Another possible cause could be a faulty oxygen sensor. This sensor helps regulate the air/fuel mixture in your engine and can cause rough idling if it is malfunctioning. Have a mechanic check and replace the sensor if necessary.