How do I troubleshoot a malfunctioning Audi A1 starter?

I've noticed that my Audi A1's starter is not functioning properly. It makes a clicking noise when I turn the key in the ignition, but the engine won't start. How can I diagnose and fix this issue?

First, you should check the battery and make sure it has enough charge to start the engine. If the battery is not the issue, then it is likely a problem with the starter itself. I recommend taking your car to a trusted mechanic to have it properly diagnosed and repaired.