My mother's 2004 Micra was last week back in the Nissan dealership for a steering bolt recall, then a day later the Power Steering failed. I've been assured this is nothing to do with the recall but more than likely with the power steering unit itself. I've heard these are very expensive to replace by a garage (i.e. £1400 when the trade in price for the car is only around £1000) - or if I can acquire the part second hand for £150-£300 I would just have to find someone to fit it.

Only problem with this is that she needs a car with power steering due to a previously broken wrist which has never healed properly. Is it worth attempting to fix the car given the age and known issues?