Firefighters were alerted to a car fire on George Street in Preston just before 1am on August 17.
One engine from Preston attended the scene and used a hose reel to extinguish the fire.
A spokesman for the fire service said: "One fire engine from Preston was called to a fire involving a car on the road.
"Firefighters used one hose reel and one breathing apparatus set to extinguish the fire which is believed to have been started deliberately."
No one was injured in the incident.