The chaos unfolded during the British Truck Racing Championship on Sunday 5 November.
In the video, trucks are seen speeding around a bend of the track before two collide.
One of the vehicles is then pushed into another before they speed onto the grass and into a fence just yards from the crowd.
Smoke fills the air, as some terrified spectators are seen running away from the scene, while others watch on in horror.
A spokesperson for Brands Hatch confirmed no injuries were suffered as a result of the incident.