Why is the Audi A1 engine not starting?

I recently purchased an Audi A1 and noticed that it sometimes doesn't start on the first try. What could be causing this issue and how can I fix it?

The most common reason for this issue is a weak battery. Make sure to regularly check and replace your battery if needed.

It could also be an issue with the starter motor. This may require professional repair or replacement. Take your car to a mechanic for further diagnosis.

Another possibility is a faulty ignition switch. This can prevent the engine from starting and may need to be replaced. Consult a mechanic for assistance.