How can I determine the source of a fuel smell in my Audi 80?

I've been noticing a strong fuel smell coming from my Audi 80 lately. How can I determine the source of this smell and fix it? I'm concerned about possible safety hazards and would like to fix it as soon as possible.

First, check for any visible fuel leaks under the car. If you don't see any leaks, the smell could be coming from a faulty fuel cap or a problem with the fuel injection system. I suggest having a professional mechanic take a look to diagnose and repair the issue.