I was taking my 2013 Si in to get it Krown oil sprayed for the winter, so I always pull back the inside trim on the trunk sides. The 2012 did not have them, but my 2013 had plastic bags filled with foam stuffed in between the trunk brace and quarter panel, they are designed to help quiet down the car I assume. Had to pull them out to allow the oil spray to get to the inside seams, just another marvel of 2013 Honda engineering!