I looked around the net last night and can't find any legislation stating that a private sale must disclose any information about the car and the buyer should do all checks prior to sale
78
Obligation on registered operator or owner of
unregistered vehicle to attach label to written-off vehicle
(1) This section applies if the regi
stered operator of a notifiable
vehicle or, if the vehicle is not
registered under this regulation
or a corresponding law to this
regulation, the owner of the
notifiable vehicle receives a
label for the vehicle from—
(a)
the chief executive under section 75A; or
(b)
a notifier under section 77(4).
(2) Within 24 hours after receivi
ng the label, the registered
operator, or the owner, must attach the label to the vehicle in a
conspicuous position so as to be
clearly visible from outside
the vehicle.
Examples of when a label is not attached in a conspicuous position—
•
label attached to back seat
•
label attached to vehicle floor
Maximum penalty—30 penalty units.