Could someone tell me how exactly these things work. I've never got one before, but i've got my car booked in with Audi for a service and asked for a loan car. The lady started saying i'd have to pay for it (cant remember how much) and that they'd be a £2500 xs on it! I always thought these things were free - you just have to pay for the fuel you use, and obviously the xs in case of any damage. Am i completely barking up the wrong tree, or do you have to pay for these things?