Went out for a drive this morning round 6am, regular mode with fairly gentle throttle, 19mpg, returned the same way with traffic and less gentle throttle and some bursts in Sport for passing, 18mpg combined trip.
There are benefits to this mode in mpg, can't stand it for the state of mind I am usually in which is to have a little fun and have power ready without having to shift anything.
No idea what paddles are for, car shifts perfectly in S and needs a harder kick in D