I know how it works on PX and I would only consider doing it if it was feasible without loosing money. ATM the car market is in disarray and used prices are at their highest they have been for years due to the new car situation. What I don’t know is what deal Motability will offer to cars they are selling, if they also want even higher prices than they usually ask or not.
It’s not even easy to get a discount on new car at present unless the dealer is looking to shift difficult stock which is not many cars currently anyway.
I am in no real rush so will hang onto the Tiguan for now and re asses in a few months when/if the market becomes a little clearer.