Well of course I am a bit biased having just bought one of the last W205’s (C300 P+, night ed). I think I agree with others that the outside of the 206 is a bit disappointing, especially the front, looks disgruntled, but the interior is super cool. A bit of additional room in the rear will be welcomed by many and is long overdue, doesn’t bother me as we rarely carry any passengers other than our godchildren.
Overall, I am sure it’s an incremental step forward in almost every area, but it will be sold at close to list for a while after launch plus the price will creep up, (they always do!), I don’t think it represents a £13-15k improvement over mine.