On Saturday (26) at 2.50am, one crew from Dogsthorpe was called to a car fire on Hartwell Way, Bretton.
Firefighters used one hose reel to extinguish the fire.
The crew returned to their station by 4.15am.
The cause of the fire was deliberate. Anyone with information should contact police by visiting www.cambs.police.uk to submit an online report or call Crimestoppers on 0800 555111.