Tesla just dropped its 2025 Impact Report, and it is packed with juicy new details about the upcoming Cybercab. While we already knew the purpose-built robotaxi was going to shake up transportation, the documentation gives us our best look yet at the hardware and manufacturing processes making it happen.
As highlighted in a series of X posts from longtime Tesla watcher Sawyer Merritt (@SawyerMerritt), Tesla laid out exactly how the two-seater will achieve its aggressive cost and efficiency goals. From Tesla’s signature structural battery cells to an entirely new way of building cars, the Cybercab is shaping up to be an engineering marvel.
Next-Gen Efficiency and a Brand New Powertrain
Tesla is aiming for a level of efficiency that leaves everything else on the market in the dust. “The Cybercab will be built on our next-generation platform, with a powertrain that is expected to deliver at least 6.1 miles per kWh, further reducing energy cost per mile,” the report reads.
The impact report compared the Cybercab’s projected efficiency against other electric vehicles, showcasing how it easily beats not just competitors like the Kia EV6 or Hyundai IONIQ 5, but also Tesla’s own Model Y AWD at 4.3 miles per kWh. While the Cybercab’s 6.1 miles per kWh efficiency is an estimated figure rather than an official EPA rating, meeting it would make it the most efficient EV ever built. Tesla leadership has even hinted that production versions could beat these numbers.
Per Tesla, this incredible efficiency means the Cybercab “will further reduce GHG emissions per mile, helping to avoid nearly twice as many emissions per mile as compared to our Model 3 and Model Y vehicles.” To support this powertrain without relying on expensive supply chains, Tesla engineered a new drive unit for the Cybercab that doesn’t need as many costly, hard-to-source minerals.
Advanced 48-Volt Architecture and 4680 Cells
Under the hood, the Cybercab pulls a lot of inspiration from the Cybertruck. Tesla confirmed that the vehicle “incorporates numerous in-house advancements including our 4680 battery cells, steer-by-wire technology and 48-volt architecture, with the latter enabling the delivery of power to different parts of the vehicle more efficiently.”
The 48-volt setup replaces traditional 12-to-16-volt wiring, cutting down on wiring weight and complexity. Recent Cybercab documentation from Tesla revealed that it is equipped with a 48-volt low-voltage lithium-ion battery, along with an SAE Level 4 'Autonomous Mode.' For high-voltage power, the Cybercab uses a 400-volt lithium-ion battery pack.
We recently also discovered that the Cybercab features a more powerful FSD computer than anything available on Tesla's consumer lineup right now, as well as dual GPS for better position tracking.
Unboxed Manufacturing and Painted Plastics
Building a cheap, mass-market robotaxi vehicle means rethinking the factory floor. Tesla is utilizing its new “unboxed” manufacturing process to build the Cybercab in parallel rather than on a traditional sequential line. This keeps the factory footprint small and better optimized.
Even the exterior fasciae avoid the typical automotive assembly bottlenecks. The Cybercab “is manufactured from lightweight reactive injection molded (RIM) panels that eliminate the need for a traditional paint shop.” Tesla noted that the RIM process, which is engineered specifically for Cybercab production, cuts manufacturing cycle times from hours in a traditional paint shop to just minutes as the paint is injected directly into the body material during the molding process.
Coming Soon to a Road Near You
We might not have to wait long to see these innovations in action. Mass production officially began at Gigafactory Texas earlier this spring, and physical testing is accelerating. In fact, Tesla started publicly testing production Cybercab units without steering wheels, pedals, or any other human driving controls for the first time in Austin just last week.
As Tesla scales up manufacturing and validation, the dream of a dedicated, low-cost autonomous ride-hailing fleet is quickly turning into reality.
