What are the potential causes for a car's engine to overheat in an Audi A3?

I've noticed my Audi A3's engine has been running hotter than usual lately. I want to troubleshoot the issue before it becomes a bigger problem. What should I check for and how can I fix it?

The first thing you should do is check your coolant levels and look for any leaks. Low coolant can cause engines to overheat, and leaks can indicate larger issues.

Another potential cause could be a faulty thermostat. This component regulates the temperature of your engine, and if it's not working properly, it can lead to overheating.