The mother of a girl killed in a car crash in Melbourne's south-east is angry that the identity of the driver has been suppressed.

A 23-year-old man was at the wheel of a car that crashed in Nar Nar Goon in October, killing 16-year-old passenger Ebony Dunsworth and injuring three others.

The man did not have a valid driver's licence and has been charged with culpable driving.

On Friday a Victorian court heard there have been death threats against him on a Facebook tribute page set up for Ebony.

The magistrate ruled his identity should not be made public, but the girl's mother, Helen Crichton, says it is a bad decision.

"As far as I am concerned, everybody should know who he is, where he lives," she said.

The man has been granted bail and will face court in April.