What could be causing the engine to overheat?

My Vauxhall Astra's engine has been running hot lately. What are some possible reasons for it to be overheating and what should I do to fix it?

One possible reason for your engine to overheat could be a malfunctioning radiator. Make sure to check for any leaks or clogs and replace the radiator if necessary.

Another reason could be a faulty thermostat. This can cause the engine to run at a higher temperature than normal. Consider getting the thermostat replaced by a mechanic.

Regular maintenance and fluid checks can also help prevent overheating. Make sure to keep an eye on your coolant levels and replace the fluid if it gets low.