The emergency services were dispatched to a car park on Bjäregatan near Gamlegårdskolan in Kristianstad on Saturday night.
The alarm was raised just before 12.30 am.
– One car was completely burnt out. We put it out but it had affected two other cars to varying degrees, said Peter Dahlquist, rescue supervisor with the emergency services in Kristianstad.
Police were also at the scene and have filed a report of damage by fire.
Nobody was injured in connection with the fire.