Tesla Hardware Checker — Does My Tesla Have HW3 or HW4?
Pick a model and build year to see which Autopilot computer a Tesla most likely has — HW3, HW4 or newer — and what that means for FSD and insurance discounts.
Why your hardware version matters
- FSD features: the newest FSD versions are built for HW4 first; HW3 cars run a reduced version or get features later.
- Insurance: Lemonade's 50% FSD-mile discount requires HW4 or newer.
- Resale value: HW4 cars with FSD generally hold their value better.
When each model switched to HW4
- Model S and Model X: early 2023. Most 2023 cars have HW4; the earliest have HW3.
- Model Y: around May 2023 for US-built cars, so a 2023 Model Y can have either. Every 2024+ Model Y has HW4.
- Model 3: with the refreshed 2024 model. Every Model 3 before it has HW3.
- Cybertruck: HW4 on every truck.
No customer Tesla has the next-generation AI5 computer yet; Tesla has pointed to around 2027 for volume production.
Three ways to confirm it on the car
- Touchscreen: open Controls > Software > Additional Vehicle Information. It lists the Autopilot computer — AI3 (HW3) or AI4 (HW4).
- Front cameras: look at the camera housing behind the rear-view mirror from outside. HW4 cars show red-tinted lenses; HW3 cameras look black.
- Build date: printed on the label inside the driver's door jamb. Compare it with the switch dates above.
Frequently asked questions
How do I know if my Tesla has HW3 or HW4?
Go to Controls > Software > Additional Vehicle Information on the touchscreen. AI3 means Hardware 3; AI4 means Hardware 4. From outside, HW4 front cameras have red-tinted lenses.
Do 2023 Teslas have HW4?
Most 2023 Model S and Model X do, and US-built Model Ys from about May 2023 do. Every 2023 Model 3 has HW3 — HW4 arrived with the 2024 refresh.
Can HW3 be upgraded to HW4?
Tesla has said owners who purchased FSD on HW3 will get a computer upgrade if HW3 can't support unsupervised FSD, but the timing and hardware aren't settled. HW4 also uses different cameras, so it isn't a simple swap.
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