Honda 0 Series: the eyes-off car that never was
Honda was the first carmaker anywhere to win approval for Level 3, in 2020. It built a hundred, then stopped. The 0 Series was meant to bring eyes-off back for everyone — and was cancelled before a single customer took delivery.
In November 2020, Honda became the first carmaker on Earth to win regulatory approval for a Level 3 system. The Legend's Traffic Jam Pilot let you take your eyes off the road in expressway congestion, backed by lidar, 3D maps, a driver-monitoring camera and ten million simulated scenarios. It went on sale in March 2021. Honda built exactly one hundred of them, leased them in Japan only, closed the factory that made them at the end of the year, and never fitted the system to another car. Five years later Honda sells no Level 3 anywhere, and the vehicle that was supposed to bring it back has been cancelled.
The Honda 0 Series was the comeback: a dedicated EV platform, a boxy 0 SUV and a low-slung 0 Saloon, an in-house operating system named after the company's famous robot, a bespoke 2,000-TOPS chip co-developed with Renesas, and a stated ambition to be "the world's first automaker to enable eyes-off driving in all driving situations." Ohio was retooled to build them at a cost of some $4.4 billion. On 12 March 2026, Honda cancelled the 0 SUV, the 0 Saloon and the Acura RSX EV together, booking losses of up to ¥2.5 trillion and posting its first annual net loss since 1957. Two weeks later the Sony-Honda Afeela died with them. No journalist ever drove a finished one.
Level 3 vehicles Honda has delivered in its history — the 2021 Legend, leased in Japan, ¥11 million each. It remains the only eyes-off system Honda has ever sold, and it was allowed to lapse within the year.
The autonomy
What survives is instructive. ASIMO OS lives, redirected from electric cars to petrol and hybrid ones. The Helm.ai partnership lives, but read the small print: it is a joint development agreement for navigate-on-autopilot, mass production "after 2027," and Helm.ai's own release describes a partially automated system requiring constant driver attention. That is Level 2. Honda's next-generation driver assistance has slipped from 2027 to 2028, will spread across more than fifteen models, and carries no eyes-off claim at all. The bespoke Renesas chip has gone quiet. The robotaxi joint venture with Cruise, which was to put five hundred driverless vehicles on Tokyo streets by this year, ended when GM pulled the plug in December 2024; Honda has announced no replacement. And the merger with Nissan that collapsed in February 2025 has just returned in reduced form — a software agreement signed three days ago to share electronic control units and a vehicle operating system, from 2029.
"Honda got to Level 3 first, sold a hundred of them, and let it go. The lesson isn't that eyes-off is hard — Honda proved it wasn't. It's that nobody could work out how to sell it."
What we're watching
- What the 2028 system actually is — Honda describes it without naming a level, which is rarely an accident.
- Whether any eyes-off ambition returns, and on what vehicle: Honda now has an operating system with no host car.
- The 0 α, the one survivor — an India-built compact EV due in early 2027, with no autonomy claim attached.
Fact sheet — Honda 0 Series (cancelled)
The ai.cars verdict
- Honda won the race to certified Level 3 in 2020 and has delivered exactly one hundred eyes-off cars since.
- The 0 Series was the comeback — dedicated platform, in-house OS, bespoke silicon, eyes-off promised for everyone.
- It was cancelled outright in March 2026 at a cost of up to ¥2.5 trillion, before a single customer took delivery.
- What replaces it is a 2028 Level 2 system co-developed with a startup, and an operating system with no car to run on.
- Verdict: the most complete retreat by any pioneer in this field. Honda proved eyes-off works, then walked away from it twice.
How does it stack up? Compare the Honda 0 Series with the Mercedes Drive Pilot, or build your own comparison.
