I don't have the shudder, at least not yet. I have noticed the surging between 35 and 40 since day one that we have had the car. I mention it to the SM :loser1: each time I've gone in for a recall and he just shrugs his shoulders like it really isn't a problem. I will see if the next recall that is still in the works fixes this issue, if not I will address it more assertively. 
