Check out the engine noise. When recently driving a new 2.5S, the road rumble and engine noise was such that I had to elevate my voice to be heard clearly by the FS passenger. Even the salesman admitted he heard similar comments fromother test drivers, and said "they're all like that" when I pressed him to reveal which trim was most quiet. I thought the suspension tranmitted quite a bit of thwunk noise over some of the rougher stuff.