I have a Calligraphy with the 8 speed dual clutch transmission. It is just over 2 months old with 5500 miles on it. Pretty much since I drove it home I experience a definite shudder when up shifting during moderate acceleration. It is very noticeable between 1st and 2nd and 2nd to 3rd. I'm sure it does it between other gears but the sensation to feel it is not as strong. I had it to the dealer just a week ago and they are not concerned and suggest that it is the nature of the double clutching. I haven't seen any other posts about this in my searching but if there is another please direct me. Your comments and thoughts are appreciate. Thanks.