One of the latest victims of key cloning has warned his fellow BMW owners they may be at risk of the crime themselves.
Andrew Southerden claimed luxury car owners are being targeted by criminals who have turned to forging sets of keys, rather than taking their chances with a forced entry.
Mr Southerden's own BMW was stolen from his home in Kibworth, Leicestershire and its disappearance wasn't noticed until long after the thieves had acted.
Police in Lincoln eventually found the vehicle and informed the pub landlord that he had become another victim of key cloning.
"There was no breakage on the car. There was no forced entry," he told harboroughmail.co.uk. "The crooks have obviously got a way to forge a key."
Mr Southerden has resorted to using a steering lock for the time being, but other Audi, BMW or Mercedes owners might want to contemplate an investment in vehicle tracking so - like Mr Southerden - they can always pinpoint the location of their car.
"My main thing of going live with it is to tell any other BMW users how vulnerable your car is," Mr Southerden added.
"This thing is going to put millions of pounds worth of claims on to everybody's insurance."
Although the forging of keys can done through a number of methods, autoevolution.com says the BMW M3's electronic locking device is particularly vulnerable to hackers.
Whilst highlighting the case through two videos, both depicting the process of stealing an M3, the site claimed that through the use of the correct codes, criminals can program a blank version of a key to gain access to the car.