A motorist was dragged to his death when another driver went ballistic and tried to flee following a fender-bender in Brooklyn, officials said.

The mayhem began when a white van and a sedan collided near Third Avenue and 65th Street in Bay Ridge at about 9:15 p.m. Thursday, according to police.

One of the drivers, Gavriel Mardaknayevy, 69, got out of his vehicle from the passenger side and attempted to stop the driver of the second vehicle from leaving the scene, police sources said.

But when Mardaknayevy reached the front of the van, 55-year-old David Cruz hit the gas and collided head on with the Coney Island ­resident.

The victim was dragged for two blocks before the driver stopped at 67th Street, police said.

The victim suffered severe trauma and was pronounced dead at the scene.

Cruz was taken into custody by police. He was later arrested on charges of murder in the second degree.