Around 6am on Sunday, Cala Millor residents alerted the emergency services to a fire that had affected at least four cars.
This was in a car park in the resort. The Guardia Civil are investigating whether the blaze was intentional.
Son Servera Police were the first on the scene. Officers used fire extinguishers, but these were insufficient for tackling the blaze.
Fire crews from Arta and Manacor went to the scene and extinguished the blaze with foam.