At 9.36pm on Thursday (28) one crew from Linton, one crew from Sawston and one crew from Cambridge were called to a fire on Bourne Bridge Road in Little Abington.
Firefighters arrived to find a fire involving five cars. Wearing breathing apparatus they extinguished the fire using hose reels and returned to their stations by 12.30am.
The cause of the fire is believed to be deliberate. Anyone with information should contact police by visiting www.cambs.police.uk to submit an online report or call Crimestoppers on 0800 555111.