How to Identify Tesla HW4 Cameras
Knowing whether a Tesla Model Y, Model 3, or Model X has Hardware 4 (HW4/AI4) matters when you're comparing vehicles or weighing FSD capability. A VIN can provide a useful estimate, but the vehicle's Additional Vehicle Information screen is the most reliable vehicle-specific check.
Our tool validates supported US Tesla VINs and analyzes reported model-year, factory, and production-sequence transition patterns. Results are estimates because Tesla's hardware transitions were gradual and can overlap within a model year.
HW3 vs. HW4: Why It Matters for FSD v14
HW3 vs HW4 differences matter because Hardware 4 is Tesla's newer driver-assistance computer and camera platform. It adds processing headroom and a newer camera suite, but feature availability still depends on vehicle configuration, market, and installed software.
Which Tesla Models Have HW4?
Tesla rolled out Hardware 4 in phases. Generally, the transition occurred during the following periods:
Model Y (Fremont)
Switched ~2023
Model Y (Austin)
Switched ~2023
Model 3 (Highland)
Switched ~2024
Model S & X
Switched ~2023
Frequently Asked Questions
Can I upgrade my HW3 Tesla to HW4?
Tesla has not announced a retrofit program from HW3 to HW4 for existing owners. Rather than assuming an upgrade will become available, ask Tesla about the specific vehicle.
Does HW4 affect vehicle range?
Hardware version alone tells you little about range. Battery, wheels, tires, model year, temperature, and driving conditions are far more useful factors when comparing vehicles.
Will HW3 vehicles receive FSD updates?
HW3 Model 3 and Model Y now receive the v14 Lite branch (wide release since July 2026). It brings selected v14 behavior and features to HW3, but it is distinct from the full v14 branch available on HW4 and still requires active driver supervision. See the FSD updates for source-linked rollout context.
Have more questions? Visit the FAQ.