Just a quick look at the Ford Galaxy gives these figures....
Galaxy 2.0 145 Edge MP 7 Petrol Manual £2950.00
Galaxy1.8TD125(6)Zetec7stMP 7 Diesel Manual £3100.00
Galaxy 2.0TD 140 Edge AT MP 7 Diesel Automatic £3750.00
Galaxy 2.2TD 175 Ghia MP 7 Diesel Manual £5000.00
OK, Ignore everything there except the figures after the £ sign.
This figure is what is known in the trade as the "Advance Payment". This is a NON returnable payment paid by the intended Mobility vehicle driver to the dealer BEFORE taking delivery of a new car. Once handed over, that deposit is lost for ever. It is gone. At the end of 3 years (maybe 5 years for an adapted vehicle) the vehicle is handed back to the dealer who will check it carefully for scratches and dents which may need to be paid for.
So, for a basic Ford Galaxy, the punter pays out an initial £2,950 + £47+ Per week.
Over 3 years, that equates to about £11, 360 paid out for the use of a vehicle, albeit a very nice vehicle and nothing to show for it after 3 years and one day. Your money has gone and your car has gone.
The benefit of Mobility vehicles is that they tend to be reliable, being new, and the tax and services as well as the insurance is also included.