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Autopilot generations (AP1 → AP4.1): what you have and what's different
Key differences in cameras/processors/capabilities, with production dates. AP1 (09.2014+) → AP2 (10.2016+) → AP2.5 (2017) → AP3 (2019) → AP4/4.1 (2023+).
Updated · 2025-09-16
- AP1 (09.2014+) — Mobileye, 1 forward camera + radar + ultrasonic sensors. EAP-level features: highway auto-steer, auto lane change, auto-park, Summon.
- AP2 (10.2016+) — 8 cameras, Tesla's own platform; early cameras had mediocre color reproduction.
- AP2.5 (~08.2017) — added a second compute chip / margin for additional cameras/sensors, improved reliability.
- AP3 (2019+) — FSD computer, full FSD support (with license and map/region restrictions).
- AP4 / 4.1 (2023+) — new cameras / radar suite, significantly faster SoC; early AP4 had unit failures, in revision 4.1 the hardware was reworked.
How to know what you have
Via Software → Autopilot in the menu, by production dates, and by part numbers of units/cameras.
Links
- Generation history and dates: https://en.wikipedia.org/wiki/Tesla_Autopilot
- HW version comparison: https://tff-forum.de/t/enhanced-autopilot-stufe-2-beim-model-s-plaid-mit-hw-4/290230
- Mobileye → Tesla context: https://tff-forum.de/t/fsd-supervised-unsupervised-und-kuenftige-tesla-versionen-teil-3/355122/1419
Sources
- https://en.wikipedia.org/wiki/Tesla_Autopilot
- https://tff-forum.de/t/enhanced-autopilot-stufe-2-beim-model-s-plaid-mit-hw-4/290230
- https://tff-forum.de/t/fsd-supervised-unsupervised-und-kuenftige-tesla-versionen-teil-3/355122/1419
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