A spokesperson for the Metropolitan Police said officers had enacted road closures around the royal residence to deal with the incident.
They said: “At around 7.20am on Saturday, January 21 a car collided with railings by Canada Gate, in The Mall SW1.
“LFB were requested after the car caught fire. Road closures were put in place.
“The driver, a man aged in his 20s, suffered no serious injuries. The incident is not being treated as suspicious.”