How to diagnose and fix an overheating issue in an Audi 80?

I've noticed that my Audi 80 is frequently overheating, particularly when driving at high speeds. What could be causing this issue and how can I fix it?

First, check your coolant levels and make sure they are at the proper level. If they are low, refill with a 50/50 mix of coolant and water. If the levels are fine, it could be an issue with your radiator or water pump. Check for any leaks or damage in these components and replace as needed.

Another common cause of overheating in an Audi 80 is a faulty thermostat. This component helps regulate the temperature in your engine. If it is not functioning properly, it can cause the engine to overheat. Have a professional mechanic check and replace the thermostat if necessary.