A Porsche Boxster went from burn-outs to burnt out in Dandenong South.
A passer-by spotted the silver car engulfed in flames on Glasscocks Road about 1am on Saturday 11 March.
The CFA attended and extinguished the fire.
Police said the car had front-end damage so it might have been involved a collision prior to being torched.
It was spotted performing burnouts just prior to the fire, police said.
Call Crime Stoppers on 1800 333 000 with any information.