What to do when my Vauxhall Corsa won't start?

I've tried turning the key in the ignition but the engine won't start, what could be the issue?

First, make sure your battery isn't dead. Check the connections and try jump-starting it. If that doesn't work, it could be a problem with the starter motor.

Check your fuel level, the fuel pump may be malfunctioning. If you have enough fuel, it could be a problem with the fuel filter or spark plugs.

If your car is making clicking noises when you try to start it, it could be an issue with the starter solenoid. It's best to get it checked by a mechanic.