Vandals torched a stolen Subaru Liberty in a Keysborough park.
Greater Dandenong CIU Detective Senior Constable Marisa Owens said they drove the blue vehicle through wooden bollards and over an embankment at the Liverpool Drive reserve just after 1am on Wednesday 18 May.
She said they then set it alight on the reserve area. The CFA attended and extinguished the fire.
Det Sen Const Owens urged anyone with information to call Crime Stoppers on 1800 333 000 with any information.