Driving unregistered in Adelaide?

my boyfriend was court driving his car unregistered car,
The police told him that he would one and only lose his license for 3 days.
and thats about it.
but other people have be sayin he could lose his license for like 3-6months an stuff like that...
what is most likely ?
we asked the police a few time surrounded by the interview and he stuck by the 3 days ...
but he doesnt go to court till aurgust
and really want to know what will happen!
thanx !
Don't know about 3 days.
More expected 3-6 months and a decent fine (or indecent depending on whether he is able to pay it lacking much hassle).

If he was on P's, then he will possibly have to sit again.