2015 Dodge Charger Scat Pack

I recently purchased a new 2015 Dodge Charger
scat pack with the 6.4 liter hemi. There are
currently 980 miles on the vehicle. When first test
driven and purchased the engine seemed smooth
and whisper quiet, well as quiet as you would
expect from an engine of that size.

After around 500 miles I noticed that the
transmission does not seem to shift as smoothly.
The car idles fairly rough and seems to stutter
when the brake is released at idle speed with no
pressure applied to the accelerator

Additionally when backing of the accelerator the
whole car seems to "lurch" and begin decelerating
almost as if the brakes were applied lightly.