I think the Megane Iconic is around £42k, so with an AP of £995 added to the PIP sacrificed, you are paying around 30% of the cost of the vehicle which, by Motability standards, is pretty good. As to how that compares to others I’ve no idea ?
A few years ago I did start to run this exact experiment, at the time it was the Ford Galaxy.
I will try to find the time to do it again.