What should I do if my Audi A2's engine won't start?

I have an Audi A2 and I'm having trouble starting the engine. It worked fine yesterday, but today it won't start at all. The lights and radio turn on, but the engine won't even crank. What could be the problem and how can I fix it?

First, check your battery. Make sure it's not dead or corroded. If it is, clean the terminals and try jumping the car. If the battery is fine, it could be an issue with the ignition switch or starter motor.

You could also try tapping on the starter motor with a tool or heavy object. Sometimes this can temporarily fix a stuck starter. If that doesn't work, it's best to take it to a mechanic.

Before you go to a mechanic, check the ignition switch. It could be malfunctioning, causing the engine to not start. If the switch is loose or doesn't turn smoothly, it may need to be replaced.