What is the power output of the Toyota Mirai fuel cell?
The Toyota Mirai’s fuel-cell stack is typically rated at 114 kW, about 153 horsepower, which feeds an electric traction motor rated around 151 horsepower (roughly 113 kW). In routine driving, this pairing delivers smooth, confident acceleration characteristic of hydrogen fuel-cell sedans. Values can vary slightly by model year and how Toyota presents the figures in official sheets.
To understand what those numbers mean, it helps to know how the system is organized: hydrogen from high-pressure tanks is converted in the fuel-cell stack to electricity, which powers the electric motor and can be supplemented by a small on-board battery for immediate torque. Over the life of the Mirai, Toyota has kept the stack output in the same general range while refining efficiency, range, and packaging rather than dramatically increasing peak power.
How the Mirai's fuel-cell system works
The Mirai uses a hydrogen fuel-cell stack to generate electricity on demand. This electricity powers an electric motor that drives the wheels, with a compact battery assisting during quick starts and energy recovery during braking. Hydrogen is stored in high-pressure tanks and fed into the stack, where it combines with oxygen to produce electricity, water, and heat. The system is designed to deliver power smoothly and quietly, with the balance of stack output, motor capacity, and energy management optimized for real-world driving.
Power figures at a glance
Below are the core figures most commonly cited for the Mirai’s powertrain in recent generations. These numbers come from Toyota’s official specs and independent reviews.
- Fuel-cell stack output: 114 kW (about 153 hp)
- Electric motor output: 151 hp (approximately 113 kW)
These figures reflect the two primary sources of power in the Mirai: the fuel-cell stack supplying electricity and the electric motor delivering wheel torque. In everyday use, the system combines these components through the vehicle’s power electronics to provide propulsion as needed.
Model-year notes
Across generations, Toyota has kept the stack’s peak output in the same general range, focusing more on efficiency, range, and packaging than a large leap in peak power. While the exact numbers can be stated slightly differently in various markets or model-year sheets, the commonly cited figures—114 kW from the stack and about 151 hp from the motor—remain the baseline for the Mirai’s powertrain in recent models.
Real-world performance considerations
In real-world conditions, factors such as driving style, ambient temperature, hydrogen fueling availability, and battery state of charge influence how the Mirai delivers power. The system is designed to provide steady, linear acceleration and quick response for highway merges and urban driving, with the battery helping to smooth torque delivery during peak demand. Range and efficiency improvements in newer models come from better fuel-cell efficiency, lighter components, and improved thermal management rather than a dramatic increase in peak peak power.
Summary
The Toyota Mirai’s fuel-cell stack is widely cited at 114 kW (approximately 153 hp), paired with an electric motor rated around 151 hp. Together, they deliver the car’s characteristic quiet, smooth propulsion, with real-world performance shaped by driving conditions and model-year refinements. For buyers and observers, the key takeaway is that Mirai’s power comes from a purpose-built fuel-cell system rather than a conventional internal combustion engine, and peak figures have remained steadier than flashy in recent years.
