Crews from Chorley and Greater Manchester were alerted to the blaze on Sheep House Lane at around 1.30am on July 7.
Crews used a hose-reel jet to extinguish the blaze.
A spokesman for the fire service said: "Two fire engines and crews, from Chorley and Greater Manchester Fire Service, responded to a report of a car on fire off road.
"Firefighters used a hose-reel jet to extinguish the fire, which was started deliberately. There were no casualties. Police were notified of the suspected arson."
Nobody was injured in the incident.