Detective Senior Constable Wayne Ryan, of the Warrnambool police crime investigation unit, said a white 2012 Holden Commodore station wagon - registration plate number YWU-459 - was stolen from a Hopetoun Road address driveway between 7pm Wednesday and 6.30am Thursday.

The victim says the vehicle, worth up to $10,000, was locked, there is no evidence of a window being smashed, so it is unknown at this stage how the thief started the wagon.

Between 9pm Tuesday and 8am Wednesday a white 2002 Mitsubishi Verada - registration QDB-773 - was stolen from the front yard of a Mortlake Road address.

The owner left keys in that vehicle, which is worth about $5000.

Detective Senior Constable Ryan appealed for any witnesses, or anyone who has knowledge of the thefts or the current whereabouts of the vehicles, to contact the Warrnambool CIU on 5560 1156 or Crime Stoppers on 1800 333 000.

"Both of these vehicles are still missing," he said.

"It's timely to remind members of the public to secure their vehicles, never leave keys in them and put all valuables, like sunglasses, cash or electronic items, out of sight," he said.

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