Why is my Audi A5's turbo not working?

I recently noticed that my Audi A5's turbo is not working as it used to. Whenever I try to accelerate, there is a significant decrease in power. What could be the issue?

It is possible that your turbocharger is not functioning properly. This could be due to a faulty wastegate or a clogged air filter. Have a mechanic check these components to determine the root cause.

Another potential issue could be a boost leak, which can cause a decrease in power and affect your turbo's performance. Get a boost pressure test done to identify any potential leaks.

You may also want to check your car's spark plugs and ignition system. A worn out or faulty spark plug can impact the turbo's function. If needed, replace them to see if it improves your car's performance.