The original gas cap # 16116750571 and the rubber washer # 16116755071 are discontinued. A relacement cap # 16111184664 is available.
MV told me that they stopped the reinspection at the back door and I will need to wait in line for the new gas cap to get checked.
BUT, back to my original question, "...if the gas cap was leaking, shouldn't it have thrown an error, i.e. "small evaporative leak" ?