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Tesla Announces Upgrades Required for Hardware 3 Vehicles to Achieve Unsupervised Full Self-Driving

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Tesla Confirms HW3 Vehicles Will Need Physical Upgrades for Unsupervised FSD

Leadership Shifts Course on Hardware Requirements

Tesla CEO Elon Musk stated that vehicles equipped with Hardware 3 (HW3) will require physical upgrades—including new computers and cameras—to enable a future version of Full Self-Driving (FSD) that operates without human supervision. This represents a shift from earlier communications suggesting such upgrades might not be necessary.

"Hardware 3 simply does not have the capability to achieve unsupervised FSD."
— Elon Musk

Musk described the upgrade process as "painful and difficult" and proposed establishing "micro-factories" in major metropolitan areas to retrofit vehicles.

CFO Vaibhav Taneja had said in October 2025, "We have not completely given up on HW3," indicating the company was still evaluating options to make HW3 work without upgrades.

Technical Constraints

  • Hardware 3 was installed in Tesla vehicles manufactured between 2019 and 2023.
  • HW3 has one-eighth the memory bandwidth of Hardware 4 (HW4) —a key constraint for unsupervised FSD.
  • Tesla plans to release a version of FSD V14 for HW3 in June 2025.
  • Musk proposed building "microfactories" in major metropolitan areas to retrofit HW3 vehicles with HW4 computers and cameras.

Financial Context

  • Tesla announced it will not be cash flow positive for the remainder of 2025 due to increased capital expenditures.
  • The company's net income has been declining.
  • The profitability of building microfactories for retrofits remains uncertain.

Impact on Customers

Customers who purchased Full Self-Driving under the expectation that only software updates would be required may face additional costs.

  • Tesla has not specified the cost structure for upgrades. Possible options include a discounted trade-in for vehicles with HW4 or an upgrade package.
  • Tesla previously upgraded Hardware 2 vehicles to HW3 for free for FSD owners.
  • Since 2016, Tesla marketed its vehicles as having hardware capable of full self-driving and sold the FSD software package for up to $15,000.

Future Plans

  • Tesla stated it will continue to release incrementally more advanced versions of the current supervised FSD for Hardware 3 owners.
  • Unsupervised FSD capability is confirmed to require physical hardware upgrades.