Modern technology has been blamed for a rise in luxury car thefts in the Geelong region.
Police say the spate of thefts included a brand new Audi A6, which was stolen from an Ocean Grove driveway on Friday morning.
Bellarine Leading Senior Constable Lyndon Code said the sedan was not locked properly and stolen from a driveway in Wallington Rd around 2am.
He said some cars have sensor proximity technology and are installed with keyless push start buttons, which can make drivers more careless when it comes to the security of their vehicles.
A lot of people leave the actual keys in the car and it's causing more thefts
"The sensor proximity technology picks up on owner movement and opens automatically when you're in close range to the car," Senior Constable Code said.
"But we're seeing a lot of people leave the actual keys in the car and it's causing more thefts."
Police are urging people to take more care and be more cautious with the security of their vehicles.
"We're urging people to make sure not to leave spare keys in gloveboxes, particularly with newer cars because of their modern technology," he said.