VIN 7SAYGDEEXPF916600 is HW4 with 95–99% confidence — an exact-VIN listing says so, and the serial sits 127,100 past the HW4 cutoff
Asked:
“how sure are you this is a hw4 or hw3 tesla? 7SAYGDEEXPF916600”
Five source-backed records across four independent hosts: two official Tesla service-manual pages decoding the VIN as a 2023 Fremont-built Model Y (sequence 916600), one exact-VIN inventory record explicitly reporting “Autopilot Hardware HW4 / AI Hardware 4,” and two independent descriptions of the Fremont HW4 transition at roughly serial 789,400–789,500.
Top: the VIN sequence number against the independently reported Fremont Model Y HW4 transition zone. Bottom: the five evidence records by type — green is direct exact-VIN evidence, amber is inference from the serial cutoff, grey is official VIN decoding (model, year, plant). Hover a bar for the full finding.
Direct evidence: the exact-VIN inventory page for 7SAYGDEEXPF916600 explicitly lists “Autopilot Hardware HW4” and “AI Hardware 4” on a 2023 Model Y Long Range AWD (45,379 mi, Colma, CA).
teslaroamer.comTwo independent rollout references put the Fremont Model Y HW4 switch around serial 789,400–789,500; this car's sequence 916,600 clears it by over 127,000 units.
gearmusk.com,
youtube.comTesla's own service manuals confirm the decode — 2023 model year (digit 10 = P), Fremont plant (digit 11 = F), Model Y Dual Motor — but the VIN does not formally encode Autopilot hardware generation.
service.tesla.comBecause the hardware generation is not a VIN field, reserve absolute 100% certainty for in-car verification; everything short of that supports roughly 95–99% confidence in HW4.
service.tesla.com
Verify in the car
- Open Controls → Software → Additional Vehicle Information and read the Autopilot computer / AI computer designation — this on-screen or service information is the decisive check.
- Secondary cue only: HW4 cameras commonly show a red/magenta lens reflection, and the HW4 side-repeater camera has a larger exposed glass element, larger casing, and a shorter light above the lens. Camera appearance is supporting evidence, not proof.
| Evidence type | Source | Reported hardware | What it says | Link |
|---|
Evidence table: 5 source-backed rows across 4 hosts (Tesla service manuals, Tesla Roamer inventory, GearMusk, YouTube), gathered for VIN 7SAYGDEEXPF916600. Serial numbers are the last six VIN digits; the 789,400–789,500 cutoff is the community-reported Fremont Model Y HW4 transition, not an official Tesla figure. Long findings trimmed in the table; full text shown in chart tooltips. No rows cut.