Why is my Audi 80's engine overheating?

I have been experiencing issues with my Audi 80's engine overheating. The temperature gauge often reaches the red mark and I'm concerned about potential damage. What could be causing this and what steps should I take to resolve it?

It is possible that your coolant levels are low or there could be a leak in the system. I recommend checking the coolant levels and inspecting for any visible leaks. If necessary, add more coolant to the system.

Another potential cause could be a malfunctioning thermostat. I suggest having it checked and replaced if necessary by a certified mechanic.