How to troubleshoot engine problems in a Vauxhall Corsa?

I recently bought a second-hand Vauxhall Corsa and have been experiencing some engine issues. Sometimes it stalls while driving and other times it won't start at all. I'm not sure where to start with troubleshooting. Any advice?

First, check the battery and make sure the connections are tight and free from corrosion. If that checks out, then you may have an issue with the fuel pump or the spark plugs.

It could also be an issue with the fuel filter. If it's clogged, it can prevent enough fuel from reaching the engine. Have that checked and replaced if necessary.

Another common cause of engine issues in the Vauxhall Corsa is a faulty ignition coil. This can cause misfires and other similar problems. Have a mechanic check this component.