Crews found the car well alight when they arrived on scene on Wednesday night, and used two hose reels to extinguish the fire.
Said a GMFRS spokesman: "We believe the fire started due to a stray firework entering the car.
“One occupant of the car suffered a slight burn from the firework which firefighters treated with burn cool gel as a precaution.
“This incident goes to show the very serious consequences that misuse of fireworks can have.
"Greater Manchester Fire and Rescue Service's advice is not to have fireworks and bonfires at home, but it you are going to celebrate at home, do so only with your own household and stay safe by following the Fireworks Code."
