I've only driven an S5, so the earlier ones may be different. For me, at around 5' 7", the seating position was very uncomfortable. Long reach to the pedals, and steering wheel far too close. Plus no elbow room.
Few people mention this, so it must be my short legs, but for me the seat position made it a complete non starter. I fit the Trad perfectly.
A friend of mine spaced out the pedal box to bring it closer. He had the same issue.
