Four fire engines and 21 firefighters and officers were called to a fire at a car park under a block flats in Durnsford Road, Wimbledon Park.
Two vehicles were damaged in the fire.
The Brigade was called at 1705 and the fire was under control at 1726. Fire crews from Wimbledon, Wandsworth, Tooting and Mitcham fire stations attended the scene.
The cause of the fire is under investigation.