I have a 2004 E320 wagon with just 28K on it and have noticed lately that when I fill it up (to the top but not top off) I have a gas smell in the garage when I bring it home. It didn't do this before. Anyone else have the same situation or any suggestions what it might be? I know gas lines can go bad but so early? I'd like to have an idea what it might be before I take it to Mercedes for costly diagonsis. Thanks, Desert