How to troubleshoot a Vauxhall Astra overheating issue?

I have noticed that my Vauxhall Astra is constantly overheating, despite having enough coolant and a properly functioning radiator. What could be causing this issue and how can I fix it?

The first thing you should check is the thermostat. It is responsible for regulating the flow of coolant and if it is stuck closed, your engine will overheat. You can replace it easily yourself or take it to a mechanic for a quick fix.

Another common cause of overheating in Vauxhall Astras is a faulty water pump. If the pump is not functioning properly, it will not circulate coolant effectively, leading to overheating. Get it checked by a professional and replace it if necessary.

It is also possible that your car's radiator is clogged or damaged, preventing proper heat transfer and causing overheating. You can try flushing it out with a radiator cleaner or replace it if it is beyond repair.