Why is my Audi A5 engine not starting?

I have been having trouble starting my Audi A5 recently. Whenever I turn the key, the engine doesn't start and it makes a clicking sound instead. What could be causing this issue?

It's possible that there could be an issue with the battery. Have you tried jumpstarting the car or checking the battery levels? If the battery is low, charging it or replacing it could solve the problem.

Another possible cause could be a faulty starter. If the starter fails, the engine won't be able to start. It's recommended to have a mechanic check the starter and replace it if necessary.