Tesla announced its fleet using the Full Self-Driving (FSD) Supervised system crossed 10 billion miles driven in the US as of May 2026 [1]. This milestone matches Elon Musk’s January 2023 statement on X that “roughly 10 billion miles of training data is needed to achieve safe unsupervised self-driving” [1]. Despite surpassing this threshold, the FSD system remains classified as Level 2 automation, requiring a fully attentive human driver to monitor the road and intervene when necessary [1].
Over 1 million Tesla vehicles have been equipped with the FSD system, contributing to the billions of miles logged under supervised conditions [1]. Tesla has not activated unsupervised driving mode for customers due to concerns around liability and safety risks. The company’s current FSD Terms of Service assign crash liability to the vehicle owner because the system is legally considered a driver-assist feature, not a fully autonomous system [1].
Tesla’s partially autonomous features have been involved in hundreds of crashes and several dozen fatalities over the years. However, Tesla has largely avoided legal liability in these incidents through settlements or court dismissals [1]. This ongoing legal context impacts Tesla’s cautious stance on enabling unsupervised driving despite reaching the data milestone.
Musk’s benchmark of 10 billion miles was framed as the data requirement to unlock fully unsupervised self-driving for customers, but no change to deployment is currently planned [1]. Tesla is continuing to collect supervised data while the regulatory and legal landscape surrounding autonomous vehicles evolves.
The next major step will depend on developments in safety validation and liability frameworks before Tesla enables unsupervised driving for its fleet.
