Police are investigating a petrol drive-off in Bacchus Marsh last week.
A man and a woman in a blue Ford Festiva pulled into the Gisborne Road service station at 6.02pm and filled up with fuel on March 1.
They have then drove off in the vehicle displaying the registration plate XY406.
Bacchus Marsh police have released images and CCTV of a woman and man they believe may be able to assist with their enquiries.
The woman is described as having very blonde hair which was tied up at the time of the theft with a tattoo line of writing across her back.