How can I troubleshoot the engine starting issue in my Audi A2?

I have recently noticed that my Audi A2 is having trouble starting, especially in cold weather. What could be the cause of this issue and what steps should I take to troubleshoot it?

The most common cause of engine starting issues in an Audi A2 is a faulty starter motor. I recommend checking the starter motor and replacing it if necessary. Additionally, make sure the battery is charged and in good condition.

Another possible cause for engine starting issues could be a problem with the ignition switch. I suggest checking the switch and its connections. If necessary, replace the switch to fix the issue.