Had my C63 in for a 'A' service and M.O.T. yesterday and had requested the 2017/18 comand map update for £99 special offer. Picked up the car and they had also done the MCT transmission update and an ECU update. All for the sum of £459. Cheapest service and extras I have ever had from Mercedes! Gear changing feels much more smoother and sharper, recommend it!