What could be causing my Audi 80's engine to overheat quickly?

I recently purchased a used Audi 80 and I've noticed that the engine temperature rises very quickly after starting the car. I've checked the coolant and there doesn't seem to be any leaks. What could be causing this issue?

It's possible that your Audi 80's cooling system is clogged or malfunctioning. I would recommend taking your car to a mechanic for a thorough inspection and potential cleaning or repair.

Another possible cause could be a faulty thermostat. If the thermostat is stuck closed, it can prevent coolant from flowing through the engine and cause it to overheat quickly. You may need to replace the thermostat.

It's also important to check the radiator fan and make sure it's working properly. If the fan isn't functioning, it won't be able to cool the engine down, causing it to overheat. You may need to replace the fan motor or the entire fan assembly.