Fire crews from Doncaster station were called to two car blazes earlier today.
The first was in Derwent Drive, Kirk Sandall, just after midnight which was a total burn-out so firefighters were not sure what model it was. They spent about 20 minutes at the scene.
Four hours later they were sent to Hexthorpe Road, Hexthorpe, where a car was also totally destroyed.
Both fires had been started deliberately, said a fire service spokesman.