Recent Cybercab updates show exactly why HW4 vehicles may top out at SAE level 3 instead of true Cybercab HW4 Level 4 FSD. The leaked Cybercab first responder guide details pressurized camera washers, active hoods, ten airbags, and a 3,000-pound front-wheel-drive design with no pedals or wheel. Those exact features are missing from today's HW4 cars.
Tesla Cybercab SAE levels vs current hardware
Chuck Cook pointed out that the sheer number of level-4-specific items in the guide makes it clear: Model 3 and Model Y hardware is unlikely to hit unsupervised FSD without major changes. SAE level 3 still expects the driver to take over when asked. Level 4 does not. That gap is the difference between a robotaxi and the cars we drive today.
HW4 vs Cybercab autonomy
The efficiency numbers are eye-opening too: 165 Wh/mi from a 48 kWh structural pack. Combine that with the passenger-centric UI and you see a vehicle built from the ground up for level-4 operation. Our current HW4 setups simply lack the redundant systems needed for the same autonomy.
What this means for Tesla owners
If you own a Model Y, the path to Model Y unsupervised FSD just got narrower. Tesla may eventually offer a HW4.5 upgrade that adds the missing camera-washer hardware, but nothing in the latest documents guarantees it. For now, the gap between Cybercab HW4 Level 4 FSD and existing vehicles looks real.
Check the full breakdown in the Cybercab first responder guide leaked and my thoughts on waiting for newer hardware in HW4 vs Cybercab autonomy.
Bottom line
The Cybercab update gave us the clearest picture yet that level-4 autonomy will require purpose-built hardware. Owners hoping for the same capability in current Model Y or Model 3 cars should temper expectations until Tesla shows otherwise. Watch the full video here: https://youtube.com/watch?v=s0YsEUb9f94
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