@ajn I had an accompanied test drive the other week, but it was a used car, I hadn’t pre-arranged it and it was in a town that I don’t live and the dealership use a predetermined route that covers fast dual carriageway, A & B roads and some town driving. As it was an expensive [£90k when new) used car with an advertised mileage, I felt that this was reasonable.
With every new car (Motability or private) however, I have always had unaccompanied test drives. Usually if pre arranged they have been full day tests, but if I’ve turned up unannounced they’ve usually been 1-2 hours. In the latter scenario, if I think the car is a definite possibility I will arrange a subsequent full day test. Every new car seems great over an hour or so, but it’s only when you have them for half a day or more that you start to discover things that are less good.