How to troubleshoot engine problems in a Vauxhall Astra?

I've been experiencing engine issues with my Vauxhall Astra, such as difficulty starting, rough idling, and loss of power. What could be causing these problems and what steps should I take to diagnose and fix the issue?

It could be a number of things causing these engine problems, such as a clogged air filter, faulty spark plugs, or a malfunctioning fuel pump. I recommend checking these components first and replacing them if necessary.

Make sure to also check the engine oil level and quality, as low or dirty oil can contribute to engine issues. If all else fails, it may be necessary to bring your car to a mechanic for a thorough inspection.

I had a similar issue with my Vauxhall Astra and it turned out to be a faulty ignition coil. Getting it replaced solved all of my engine problems. So, it's worth checking that as well.