The normal Focus is a C segment car, namely amid size hatchback. So C-Max is C and a bit extra.
S Max just sounds cooler than D Max which it should be which is large car/saloonor E-Max which would be very large car/saloon.
A segment = Mini, Ka
B Segment = 1 series BMW, Fiesta
C Segment = 3 series, Audi A3, Focus,
DSegment = 5 Series, A4, Mondeo,
E Segment = 7 Series, etc. A6, A8, Granada/Scorpio
2005 Focus C-Max 1.8 Petrol Ghia + Sony 6 disc, 2007 tail lights, Led bulbs all over and HID front fogs.