How to troubleshoot an issue with the Vauxhall Insignia engine not starting?

I have a Vauxhall Insignia and recently it has been giving me trouble starting. What could be causing this issue and how can I fix it?

This issue could be caused by a variety of factors, such as a faulty starter motor or a drained battery. I suggest checking the battery and making sure it has enough charge. If the battery is fine, then I recommend taking it to a trusted mechanic for further diagnosis.

Have you recently changed the ignition switch? If so, make sure it is properly installed and that all the wires are connected correctly. If not, then I suggest checking the fuel pump and fuel filter for any clogs or damage.

I had a similar issue with my Vauxhall Insignia and it turned out to be a faulty crankshaft sensor. I recommend getting this sensor checked and potentially replaced by a professional mechanic.