The incident occurred yesterday when the speeding SUV overturned on Bikaner-Jaisalmer highway killing four persons on spot, they said.
The deceased have been identified as Vinod Sonawat, Sushil Rampuria, Vishwas Sonawat and car driver Asif Ali, police said.
The injured persons have been admitted to a hospital here where their condition was stated to be stable, they said, adding, the matter is being investigated.