Why is my Vauxhall Insignia overheating after I changed the coolant?

I recently changed the coolant in my Vauxhall Insignia and now it seems to be overheating. What could be the reason for this and how can I fix it?

It is possible that there is air trapped in the cooling system after the coolant change. Try bleeding the system to get rid of any air pockets.

Make sure that you used the correct type and mix of coolant for your Vauxhall Insignia. Using the wrong type can cause overheating.

Check for any leaks in the cooling system. A small leak can cause the system to lose pressure and overheat.

If none of the above solutions work, it is possible that there is a bigger issue with the cooling system. It would be best to bring it to a mechanic for further inspection.