Federal Safety Probe Targets Comma.ai After Deadly Crashes
The National Highway Traffic Safety Administration has opened an investigation into Comma.ai's aftermarket driver assistance systems following five reported crashes, two of which killed three people. The agency says the devices failed to detect slow or stopped vehicles in some incidents, and at least one fatal crash may have involved a modified version of the company's openpilot software. Comma.ai, founded by George Hotz, markets its technology as similar to Tesla Autopilot and GM Super Cruise.
The probe, opened by NHTSA's Office of Defects Investigation, covers five reported crashes where Comma devices allegedly failed to detect slow or stopped vehicles in the same lane. Four of those incidents left as many as 11 people injured. One fatal crash in February 2026 involved a Toyota RAV4 running FrogPilot, a third-party modification of Comma's openpilot software, striking a stopped first responder vehicle in Louisiana.
Comma.ai, founded in 2015 by George Hotz, sells aftermarket devices that control adaptive cruise control and lane centering, positioning itself as a lower-cost alternative to factory systems like Tesla Autopilot. The company's own warnings require drivers to remain ready to retake manual control, and its hardware includes a camera-based driver monitoring system. Hotz stepped back from daily operations in 2022.
This investigation could reshape the aftermarket driver assistance market, where consumers install semi-autonomous features on vehicles that lacked them from the factory. If NHTSA finds systemic failures, it may impose stricter oversight or recall requirements on Comma.ai and similar products, potentially raising costs and limiting access. The involvement of modified software forks also highlights how easily users can bypass safety guardrails, a concern that may extend to other open-source driving systems and affect public trust in all hands-off assistance technologies.