The car was on its way from Rishikesh to Srinagar when the incident occurred, police said, adding that the car fell into the deep gorge in Tota Ghati in Devprayag in Tehri district.
Though the exact reason for the accident has not been ascertained yet but police suspect that the driver might have missed a blind turn which led to the mishap, police said.
Their bodies have been recovered. Three policemen were among the dead, police said.