A woman was robbed at gunpoint in an underground car park on Parramatta Road, Strathfield.
The robber took the 28-year-old woman's mobile phone, keys, cash as well as her Honda CRV and drove away at around 2:40am on Saturday 18 January.
The man is described as being of Caucasian appearance, aged in his 30s, about 165cm tall with a slim build.
He was last dark denim jeans.
Police are urging anyone with any information to call Crime Stoppers on 1800 333 000.