I've been told by a garage that I need a NSF wishbone due to a knocking noise. The Punto is 13 years old. is it safe to drive until I can get this done?
In the UK it may not be legal to drive knowing your car is technically not roadworthy as parts of its suspension are not sound.
Its also unknown when the wishbone will fail completely or even if it will fail completely at all.
At around £25-£50 for the parts it would be sensible to not risk it and get it replaced - small independent garages may be cheaper than dealers to get it worked on if money is an issue. Additionally it may be putting stress on other parts of the car as its not able to bear its load correctly.