A BMW 325i coupe was gutted by fire in Narre Warren North on Thursday 15 September.
The 1995 black BMW, which was parked next to the creek on Fox Road, was extensively damaged when police arrived, about 4am on Thursday 15 September.
Police were called four hours after the car was set alight.
Anyone with information on the car fire is urged to call the Narre Warren Police Station on 9705 3111.
