Autopsies are being carried out to determine the cause of death for two people after their bodies were found in a car in the Otway Ranges, in south-west Victoria, over the weekend.

A jogger found the vehicle on a dirt track of Birregurra-Forrest Road, about three kilometres from Forrest, about 11:00am (AEDT) on Saturday.

The bodies have not been identified and the circumstances surrounding their deaths are being investigated.

Police are urging anyone with information to call Crime Stoppers.