What to do when my Audi A2's engine won't start?

I turned the key in the ignition and nothing happened, not even a click. What could be causing this issue and what steps should I take to solve it?

Check the battery to ensure it has enough charge. If it's low, try jump starting the car or replacing the battery.

It could also be an issue with the starter motor. If you hear a clicking sound when turning the key, this could be the case. Consider getting it checked and replaced if necessary.

Check the spark plugs and ignition system. If they're worn out or faulty, they could be preventing the engine from starting.