One problem related to fuel delivery has been reported for the 2003 Audi Cabriolet. The most recently reported issues are listed below.
When this cars gas tank goes below a half tank, the gas chamber does not allow gas to flow into the tank. For some reason,the gas pump releases or worse the fuel overflows. The safety or risk here is that one can get stranded, be in a strange town, far from home late at night, without the ability to fill the tank. I have reported this problem to my local dealer on many occasions but without any resolution.