Why does my Audi A3 engine suddenly start heating up?

I recently bought a used Audi A3 and have been experiencing issues with the engine heating up suddenly when driving on the highway. The temperature gauge jumps from normal to hot within minutes. What could be causing this and what should I do?

Check your coolant levels and make sure it's topped up. Low coolant levels can cause overheating and potentially damage your engine. Also check for any leaks in the coolant system. If everything seems fine, it could be an issue with the thermostat or water pump. Consider getting a professional inspection.

I experienced the same issue with my Audi A3 and it turned out to be a faulty radiator fan. The fan was not cooling the engine properly, causing it to overheat. I had to replace the fan and haven't had any issues since then.