During Tesla’s Q1 2026 earnings call on April 22, 2026, Elon Musk officially acknowledged that approximately 4 million Tesla vehicles equipped with Hardware 3 (HW3) do not have the computing power required to achieve “unsupervised” Full Self-Driving (FSD).
This admission marks a significant pivot, as Tesla had sold these vehicles for years under the promise that they possessed “all the hardware necessary” for full autonomy.
1. The HW3 vs. HW4 Performance Gap
The primary bottleneck identified by Musk is memory bandwidth. He revealed that HW3—the standard computer for Teslas built between 2019 and 2023—has only one-eighth the memory bandwidth of the newer HW4 (now rebranded as AI4).
- Computing Constraint: As FSD’s neural networks have become more complex, they have outpaced the processing capabilities of the HW3 chip.
- The Consolation Prize: Tesla will release a “V14-lite” (a distilled version of the flagship V14 software) for HW3 owners by late June 2026. While this brings new features, it will not support fully unsupervised driving.
2. The Solution: “Microfactories” for Retrofits
To address the millions of owners who paid up to $15,000 for an FSD package that their cars can no longer technically run, Musk proposed a radical logistical solution:
- Dedicated Retrofit Hubs: Musk admitted that standard service centers are too slow for mass upgrades. Tesla is considering building “microfactories” in major metropolitan areas—small production lines dedicated solely to swapping out computers and cameras.
- Camera Upgrades: Unlike the move from HW2.5 to HW3, which was just a computer swap, moving to HW4 requires replacing the cameras as well, significantly increasing the cost and complexity of the retrofit.
- Discounted Trade-ins: Tesla will offer a “discounted trade-in” program for HW3 owners to move into a newer AI4-equipped vehicle, though specific pricing has not yet been disclosed.
3. Timeline for Unsupervised FSD
Musk once again pushed back the timeline for the launch of unsupervised FSD for consumer vehicles.
| Milestone | Previous Estimate | Current Estimate (April 2026) |
| Unsupervised FSD (Consumer) | June 2025 | Q4 2026 (Gradual rollout) |
| Robotaxi Operations | Late 2025 | End of 2026 (Limited states) |
| AI5 Chip Production | Late 2025 | Mid-2027 |
4. Financial & Legal Implications
- Capital Expenditure: Tesla signaled it would increase its CapEx to over $25 billion for 2026 to fund AI infrastructure, the new “Terafab” in Austin, and these massive retrofit efforts.
- Liability Concerns: Analysts suggest that if Tesla cannot efficiently upgrade all 4 million HW3 vehicles, the company could face a multi-billion dollar liability in legal compensation or class-action settlements for false advertising.
