 The local service dept and Nisan consumer affairs told me the juddering is "normal" and that the car does that when the driver has a "light foot" (for better fuel economy they say - which makes no sense). So basically they are telling me that to make the juddeing stop I need to mash on the gas when I accelerate from a complete stop like I want to race the guy next to me. That sounds legit. What about the thumping it makes when at a stop sign / light? Oh yea that's normal too. --- UPDATE: nothing has changed or been resolved. Nissan consumer affairs told me I need to take it back in to have it reevaluated since its been over 3 months since it had been to the service department. Mind you, that was 1 week after I picked it up from the service department. Looks like I'm stuck with a lemon.