i have some
jcw's in my S and love them, if I had a One I would put them in that aswell, or a One D, power or fuel makes no difference these seats are 100 time more comfortable than the standard sport seats, plus they look the mutts nuts, I regularly drive 200miles in my car in one hit and I feel much better after driving with the
JCW's compared to the standard seats.
hope this helps
Rob