'The reports that Flipper Zero makes it easy to steal cars are false,' the development team said in a blog post explaining the situation.

Can Flipper Zero really steal your car? (Spoiler: NO)
https://blog.flipper.net/can-flipper-zero-steal-your-car/

Flipper Zero allows users to add their own functions, and some users have developed a function to ' duplicate car smart keys .' In August 2025, the existence of custom firmware with the function 'emulates all rolling codes and enables unlocking of the car by simply receiving a signal emitted from the smart key once' was reported.
Rolling code security adopted by many automakers, including Mitsubishi and Subaru, can be unlocked with a single shot using Flipper Zero. Is there no easy solution other than a large-scale vehicle recall? - GIGAZINE

Furthermore, on August 21, 2025, 404 Media published an article stating that ' custom firmware for cloning smart keys is being sold for a fee .' 404 Media reported that they had successfully contacted a custom firmware seller named Daniel, who shared a list of over 200 vehicle models that had been modified, including vehicles from Subaru, Honda, Suzuki, and Mitsubishi.

Meanwhile, the Flipper Zero development team published a blog post titled 'Can Flipper Zero really steal cars? (The answer is NO)' on August 22, 2025. According to the development team, the custom firmware currently available simply uses

You can see how a thief uses a relay tool to steal a car in the video below.
Newest car theft threat: carhackers - YouTube
The development team stated, 'If your car can be stolen with Flipper Zero, it can easily be stolen with a single wire,' concluding that Flipper Zero poses no risk.