Zero issues with mine, picked it up a few weeks ago, very recent build. Even panel gaps, they are perfectly aligned, in fact exceeded my expectations (all panels are equally spaced). As far as interior rattles, no issues at all..... even compared to my BMW or Mbenz. I can even hear the sound of water bottle splashing that is stored deep in the central console under the armrest. Previous owners have warned me about the build quality being a matter of luck, and what I got had exceeded my expectations.
I specially liked the wind noise insulation... It was fun to take it on the highway (admittedly there wasn't high speed wind, but still, driving 85 MPH, it acted really well noise wise).
I recently did a full PPF... there was not even any chance for them to tuck the PPF in between the front bumper gaps and fenders, or the rear bumper and quarter panel, which is by itself a good sign. I would say that the rear trunk could receive some design enhancement to show a smaller gap with the quarter panel... seems common and unavoidable due to the trunk curvature design