How do I diagnose a coolant leak in my Audi 80?

I've noticed a consistent pool of coolant under my car, but I'm not sure where the leak is coming from. How can I determine the source of the leak and fix it?

First, check your engine bay for any visible coolant leaks, such as from a cracked hose or radiator. If nothing is visible, you may need to use a pressure tester to pressurize the system and see if the leak becomes more obvious.

If you're still unable to find the source of the leak, it may be coming from a worn out gasket or seal. You may want to take your car to a mechanic for a professional diagnosis and repair.