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Tesla's own support page gives the check: Controls > Software, then Additional Vehicle Information. Without the car, the dates do most of the work: Hardware 3 (HW3) from spring 2019, Hardware 4 (HW4) in the Model S and X from early 2023, Fremont Model Ys from late May 2023, and the restyled Model 3 from 2024.
Tesla confirmed on its Q1 2026 earnings call that Hardware 3 cannot achieve unsupervised Full Self-Driving. Roughly 4 million cars are affected. The fix requires replacing the computer and cameras, and Tesla plans to build micro-factories to handle the volume. Meanwhile, HW4 Plus was announced in the same call, starting the same hardware obsolescence cycle over again.
Tesla has finally told HW3 owners the truth: no unsupervised FSD on the old computer, a retrofit program is coming, and FSD v14 Lite started rolling out in late June 2026. Here's what ~4 million owners actually get — from one of them.