Some of the UK’s most popular cars are increasingly becoming susceptible to keyless theft, says the consumer group Which?
It looked at a German engineering report which identified the Fiesta, Golf, Qashqai and Focus were at risk from thieves using over the counter electronic devices to highjack key codes, enter a vehicle and sometimes drive it away.
The German equivalent of the RAC and AA tested 237 cars with remote locking and found only the latest Jaguar i-Pace, Discovery and Range Rover, were secure.
The old Vauxhall Corsa also passed because it uses a traditional key.
Car makers say they are constantly updating access security systems and owners should take precautions when leaving cars, waiting for the distinctive click as the locks engage, and putting their keys in a metal box away from the front door of their home.