⁸Even if this vehicle was being sold by a Rolls Royce garage, it's still an old banger valued at scrap money in the open market.
Expecting a faultless vehicle would be very optimistic.
Certainly the vehicle must be roadworthy, so no brakes would be a problem, but worn brakes would not, as long as the car stops within accepted standard.
Same for clutch, small leaks (which are absolutely normal on an old engine), air con not at sub zero temperature, some rip in the seats, some dents in the body, etc.
The fact is that the neighbour has gambled on a car and the gamble unfortunately did not pay off.
I and many others have gambled with old bangers in our days, sometimes you win, sometimes you lose.
I won a couple of times and lost once, that's the nature of gambling.
If you want a faultless vehicle buy a new one or a used one from a real dealer with a real reputation and real warranty in case things go wrong.
Old banger=gambling.