Elon Musk confirms Tesla Hardware 3 cars lack full self-driving capability

Tesla’s promise of fully autonomous driving remains unfulfilled for owners of Hardware 3-equipped vehicles, according to statements from CEO Elon Musk during the company’s most recent earnings call. Despite being designed with Full Self-Driving (FSD) in mind, these cars—manufactured between 2019 and early 2023—lack the processing power required for unsupervised autonomy.

Musk acknowledged the hardware’s shortcomings, explaining that Hardware 3 systems simply cannot deliver the performance needed for FSD. "Hardware 3 does not have the capability to achieve unsupervised FSD," he stated. The limitation stems from a critical bottleneck: Hardware 3 offers just one-eighth the memory bandwidth of its successor, Hardware 4. Musk emphasized that memory bandwidth is a fundamental requirement for achieving true self-driving capabilities.

Tesla’s Hardware Upgrade Strategy: Promises and Practical Challenges

Tesla is preparing to address this issue by offering hardware upgrades to Hardware 3 vehicles, though the company has yet to finalize a concrete plan. Musk suggested that over time, it may make sense to convert all Hardware 3 cars to Hardware 4 systems. However, he admitted that performing these upgrades at service centers would be a slow and inefficient process.

With approximately 4 million Hardware 3-equipped vehicles on the road—though not all with FSD enabled—Tesla faces a massive logistical challenge. To expedite the process, Musk proposed establishing "microfactories" or small-scale production hubs in major metropolitan areas. At the time of the earnings call, he provided no details on whether Tesla had already begun constructing these facilities or when construction might commence.

In the interim, Tesla plans to roll out FSD version 14 for Hardware 3 vehicles by the end of June, which may offer incremental improvements in autonomous driving capabilities.

Fremont Factory Shifts Focus to Optimus Robots

Beyond self-driving cars, Musk revealed that Tesla’s Fremont factory will begin producing the company’s humanoid Optimus robot in late July or August. This move aligns with Tesla’s decision to phase out its Model S and Model X vehicles earlier this year, freeing up space in the facility for new production lines.

The last Model S and Model X cars are expected to roll off the assembly line in May, giving Tesla a tight three-month window to dismantle existing equipment and install new machinery. While Musk has a history of setting ambitious timelines, the transition underscores Tesla’s broader strategic pivot toward robotics and AI-driven automation.

As Tesla navigates these hardware upgrades and factory retooling efforts, the company’s ability to deliver on its long-term autonomy promises remains a key point of scrutiny for investors and customers alike. With FSD version 14 on the horizon and hardware upgrades in the works, the coming months will be critical in determining whether Tesla can bridge the gap between promise and reality.