Tesla finally admitted what owners have suspected for years. Cars with Hardware 3 can't run unsupervised Full Self-Driving. Musk said on Tesla's quarterly earnings call Wednesday that HW3 vehicles, sold between 2019 and 2023, need new computers and cameras to achieve true autonomous driving. "Hardware 3 simply does not have the capability to achieve unsupervised FSD," he said.
That's a direct contradiction to years of assurances from Tesla that HW3 had everything needed for full self-driving. Just six months ago, CFO Vaibhav Taneja told investors the company had "not completely given up on HW3." Now Musk is talking about building "micro-factories" in major cities to handle the volume of retrofits. Each upgrade could take 6 to 12 hours. We're talking about millions of vehicles.
Owners who paid thousands for FSD based on Tesla's promises have reason to be upset, as one Dutch Tesla owner was told to 'just be patient' after seven years of waiting. One Hacker News commenter with both an HW3 Model Y and HW4 Cybertruck described the gap starkly: the HW4 drives "almost flawlessly from start to finish and feels natural," while the HW3 "drives like a robot and occasionally makes mistakes." Tesla will push slightly improved FSD versions to HW3 cars, but that's it.
The legal exposure is real. Tesla sold cars for four years on the premise that full autonomy was a software update away, a premise Tesla now acknowledges hasn't materialized as promised. Musk himself acknowledged in January 2025 that upgrading HW3 would be "painful and difficult." Building out micro-factories to handle millions of retrofits would be an operation with almost no precedent in automotive history. Nobody has tried this at this scale.