My three year old car failed its MOT almost four weeks ago, and is still in the garage waiting for a part. With no timescale, as to when it will arrive. In the meantime I've got a hire car arranged by the dealership. It's a nice car but absolutely huge and much less economical to run than my own little car. I usually don't drive to much, but due to pre booked plans, I'm close to the fair mileage limit for the month. I will also be doing a lot of driving over Christmas, which will exceed the limit. Do I have any way of getting the dealership to cover the extra costs incurred? After so long, my patience with the dealers is wearing thin!