I'm looking into buying a 2004 Daihatsu Sirion. It has low mileage (50,000) and from all accounts has been well looked after. On its most recent MOT it had two advisories:
"Slight brake bind osf" and "Surface corrosion started on both outer sills"
How concerned should I be about these? What can be done about either of these things and how costly might it be?