A high-end Audi was the target of thieves who terrorised a young family in Melbourne's west.

The gang are also thought to have been involved in the carjacking of another Audi belonging to a female real estate in Tarneit on Friday, who was seriously hurt in the incident.

Sanna Farrukh and her family were terrorised in the early morning home invasion on Monday. Credit:Seven News

Farrukh Naeem, his wife Sanna Farrukh and their two young sons were sleeping in their Brookfield home in the early hours of Monday morning when five masked climbed the back fence and snuck into the house through a sliding door about 1.20am.

The group apparently searched the home for the keys to the family's brand new Audi A5. They also took cash before storming into the main bedroom and threatening the family with wooden stakes pulled from the fence outside.