Why does my Audi A3's engine keep overheating?

I recently bought a used Audi A3 and have noticed that the engine keeps overheating, even though I've had regular maintenance done on it. What could be causing this issue and how can I fix it?

One possible cause of engine overheating in an Audi A3 could be a malfunctioning thermostat. This can cause the engine to run hotter than normal. I recommend taking your car to a trusted mechanic to have them check the thermostat and replace it if necessary.