Fuel Cells? Really? Actually... Yes.
Toyota just signed on to cellcentric, the hydrogen fuel cell joint venture that Daimler and Volvo launched back in 2020. Toyota is joining as an equal third partner, bringing over 30 years of fuel cell R&D to the table.
If your first reaction is “wait, hydrogen? still?” you’re not alone. Elon Musk has been calling fuel cells a dead end for years. Stellantis killed its hydrogen program last year. GM bailed in 2025. The auto industry has largely moved on.
So why is Toyota still doing this? And are they crazy, or do they know something?
The Efficiency Problem Is Real
Musk’s core argument is physics, and the physics is brutal. To use hydrogen as a vehicle fuel, you have to electrolyze water (lose ~30%), compress or transport the hydrogen (lose ~15%), then convert it back to electricity in a fuel cell (lose ~40%). Your total round-trip efficiency lands somewhere around 25–30%.
A battery EV? Around 80–90% efficient, wall to wheels.
For a passenger car that charges overnight in your garage, the math is devastating. There’s no engineering trick that closes that gap. It’s thermodynamics. The Toyota Mirai’s sales numbers tell the story: roughly 200 units sold last year, down over half from the year before. Toyota is even facing a class-action lawsuit in California over selling cars despite known hydrogen fuel shortages. The consumer hydrogen car is, for all practical purposes, dead.
Musk is right about this. But context matters.
But Passenger Cars Aren’t the Whole Story
Here’s where it gets interesting. The efficiency argument that kills hydrogen for sedans weakens significantly once you move to heavy transport.
Consider a Class 8 long-haul truck that needs 800 km of range. The battery pack for that would weigh roughly 8,000 kg. That’s 8 tonnes of battery eating directly into your payload capacity. Hydrogen tanks are dramatically lighter per unit of stored energy. And refueling takes minutes, not hours. When your truck is sitting at a charger, it’s not making money.
The same logic extends to ships, trains, and stationary power generation. Toyota’s third-generation fuel cell system is targeting all of these, claiming double the durability of the previous generation (matching diesel engine lifespans), 20% better fuel efficiency, and around 50% cost reduction.
And the infrastructure problem, 70 public hydrogen stations in the entire United States, becomes a completely different equation for commercial fleets. You don’t need a station on every corner. You need a handful of depots on known trucking routes. Daimler and Volvo have been pushing for 300 heavy-duty hydrogen stations by 2025 and 1,000 by 2030 across Europe.
So Why Does Toyota Keep Going?
A few reasons, and they’re not all about physics.
The pivot is already happening. This cellcentric deal isn’t about the Mirai. It’s specifically about heavy-duty commercial vehicles. Toyota is quietly shifting its hydrogen ambitions toward the segment where batteries genuinely struggle. Toyota’s CEO Koji Sato framed it as combining cellcentric’s commercial vehicle expertise with Toyota’s decades of fuel cell development.
Japan’s national energy strategy. Japan lacks domestic lithium but has positioned itself as a hydrogen economy hub. Toyota’s hydrogen push aligns with national industrial policy, not just automotive economics.
Multi-pathway hedging. Toyota explicitly calls this a “multi-pathway strategy”: hydrogen alongside hybrids, PHEVs, and BEVs. They’re treating fuel cells as a complement to batteries, not a competitor.
And yes, sunk costs. Toyota bet heavily on hydrogen over BEVs a decade ago. Abandoning it entirely would be a massive write-down and a very public admission that the core strategic bet was wrong. But the cellcentric move is the smartest version of not abandoning it. It’s redirecting the investment toward the use case where it actually makes sense.
The Bottom Line
Musk is right that hydrogen passenger cars are dead. The Mirai is evidence of that. But Toyota isn’t stupid. They’re pivoting hydrogen toward heavy-duty trucking and industrial applications where the weight and refueling advantages are real, the infrastructure problem is solvable, and batteries genuinely struggle.
The cellcentric deal with Daimler and Volvo is the clearest signal yet: the industry’s real hydrogen play was never consumer sedans. It’s the 40-tonne trucks moving freight across continents.
Both sides have a point. But context matters.
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