If you buy Milenco mirrors then you will need to change the standard pads to F-pads available from the caravanshop.
Copied from another site (2018)
I tow a Coachman Pastiche 460 with a 2015 Skoda Superb Estate Mk3, using Milenco Grand Aero mirrors. I did have a problem last year with one mirror fixing slipping off the door mirror – the door mirror is slightly bevelled and also has an indentation between the body of the mirror and the rim. It may well be that the Kodiaq mirrors are of similar design.
My problem has been entirely solved by the use of the Milenco Aero F pads, which have a small ridge on the face of the pads, which fits into the indentation on the door mirrors. These pads are well hidden on the Milenco website and I have not seen them well publicised. I got mine from www.thecaravanshop.co.uk , where they are stock number 4664 and cost £6.95 plus £1.95 p&p. Well worth it for peace of mind.