2016 smart ed. Bought a few months ago, still under warranty. A few times there has been a jerk/stutter type feeling when accelerating from a stop. It feels like the car went over a small speed bump but no bump there. I can’t find that anyone has ever mentioned such a thing. My last smart ED (2014 MY) never did it. Does anyone have any insight of where to even start to diagnose it? What it may be related to?