I don’t see why you can’t have it on a motability car, my Corolla is a company car and the only thing I can think of is there is an option to add details from your log book for you to prove ownership to get the best from the app, and because we don’t own the cars we have no log book.
Daughters motability car Hyundai Tucson Ultimate self charging hybrid Serenity White Moss Grey interior.
My car SEAT Ibiza SE Tec 1.2 petrol TSI 2017.