How to properly clean the catalytic converter on an Audi A2?

I recently noticed a decrease in performance and gas mileage on my Audi A2. After some research, I suspect that the catalytic converter may be clogged. How can I effectively clean it without damaging my car?

First, determine the cause of the clog - it could be due to a faulty oxygen sensor or an engine problem. Once identified, purchase a specialized catalytic converter cleaner solution and follow the package instructions carefully.

Avoid using harsh chemicals or high-pressure cleaning methods, as they can damage the converter. Instead, try using a mixture of vinegar and water or a dedicated catalytic converter cleaning tool, and follow the directions precisely.