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2014 Toyota Mirai press kit



** Hydrogen fuel-cell sedan launched **

Toyota has launched an all-new hydrogen fuel-cell sedan that delivers punchy performance as well as offering the convenience and driving pleasure of a conventional car.

The ground-breaking new Toyota - called Mirai, a Japanese word meaning "future" - achieves maximum power well above 100kW from both its fuel-cell stack and its electric motor.

A four-door sedan, the Mirai has the cruising range of a conventional sedan, can be refuelled in less than five minutes and emits only water vapour when driven.

The Toyota Fuel-Cell System (TFCS), which enables the Mirai to produce its own electricity, incorporates world-first technology and several world-leading systems, including for power density and hydrogen storage density.

The system utilises the same hybrid technology developed for Toyota's hybrid synergy drive systems, replacing the petrol engine with a fuel-cell stack.

Hydrogen, stored under pressure in two tanks at 700 MegaPascals (700 bar or 10,000psi) is fed into the fuel-cell stack where it is combined with oxygen to create a chemical reaction that produces electricity to power the vehicle.

The system is more energy-efficient than internal combustion engines and emits no CO2 or pollutants when driven.

Drivers can also expect the same level of convenience as offered by petrol-engine vehicles, with a cruising range close to 500km and a hydrogen refuelling time of about three minutes1.

Extensive engineering development has resulted in smart solutions that have enabled Toyota to delete or reduce the size and number of system components - saving space and cost while improving or maintaining performance.

Toyota's global president Akio Toyoda said the launch of Mirai is a turning point in the automotive industry - a new age where hydrogen is used as a fuel to generate electricity.

"The future has arrived - and it's called Mirai," Mr Toyoda said.

"We imagined a world filled with vehicles that would diminish our dependence on oil and reduce harm to the environment. It was a bold, but inspiring goal - and today it is a reality.

"Our fuel cell vehicle runs on hydrogen that can be made from virtually anything, even garbage! It has a fuel cell that creates enough electricity to power a house for about a week.

"This is a car that lets you have it all with no compromises."

The Mirai will go on sale in Japan next month and will be launched in Europe and the United States next year.

There are no plans to offer the car in Australia ahead of the development of an appropriate hydrogen-refuelling infrastructure.




4,890 mm


1,815 mm


1,535 mm


2,780 mm

Track (front/rear)

1,535/1,545 mm

Min ground clearance

130 mm

Interior length

2,040 mm

Interior width

1,465 mm

Interior height

1,185 mm

Kerb weight

1,850 kg





Toyota Fuel-Cell Stack


Polymer electrolyte fuel cell

Volume power density

3.1 kW/litre

Maximum output

114 kW

Humidification system

Internal circulation (humidifier-less)


Number of tanks


Nominal working pressure

70 MPa (approx. 700 bar)

Tank storage density

5.7 wt%

Tank internal volume

122.4 litres (front tank: 60 litres; rear tank: 62.4 litres)



AC synchronous electric generator

Maximum output

113 kW

Maximum torque

335 Nm



Nickel-metal hydride


1As measured by Toyota when refuelling at a hydrogen station supplying hydrogen at a pressure of 70 MPa under the SAEe J2601 Standard conditions (ambient temperature: 20C, hydrogen tank pressure when fuelled: 10 MPa). Time will vary depending on hydrogen fuelling pressure and ambient temperature.

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Toyota's new Mirai delivers everything expected of a next-generation car: an immediately recognisable design, driving pleasure stemming from superior handling stability achieved by a low centre of gravity, and quiet but powerful acceleration provided by the electric motor.

Hydrogen can be generated using a wide range of natural resources and man-made by-products such as sewage sludge. It can also be created from water using natural renewable energy sources like solar and wind power.

When compressed, it has a higher energy density than batteries, and is relatively easy to store and transport, therefore it also carries expectations for potential future use in power generation and a wide range of other applications.

Fuel-cell vehicles are able to generate their own electricity from hydrogen, meaning they can help make a future hydrogen-based society a reality, and are therefore expected to further contribute to accelerating energy diversification.

1. TFCS provides superior environmental performance and convenience

The Mirai features the Toyota Fuel-Cell System (TFCS), a fusion of fuel-cell technology with hybrid technology.

The system provides better energy efficiency than internal combustion engines, superior environmental performance with no emissions of CO2 or pollutants when driving, and the same level of convenience and autonomy as petrol-engine vehicles, and a hydrogen refuelling time of about three minutes1.

The system uses Toyota-developed components including the Toyota Fuel-Cell Stack, boost converter and high-pressure hydrogen tanks.

Toyota Fuel-Cell Stack

The new Toyota Fuel-Cell Stack achieves a maximum output of 114 kW. Electricity generation efficiency has been enhanced through the use of 3D fine mesh flow channels2 (a world first3). This ensures uniform generation of electricity on cell surfaces, providing compact size and a high level of performance, and a world-leading3 power output density of 3.1 kW/L (2.2 times higher than that of the previous Toyota FCHV-adv, a limited-lease model based on the previous-generation Kluger).

The amount of water on fuel-cell electrolyte membranes has a substantial influence on electricity generation efficiency. Control of the amount of water is carried out using an internal system for circulating the water created when generating electricity.

It means the Toyota Fuel-Cell Stack is a world-leading5 system that, unlike systems used in all other previous Toyota fuel cell vehicles, does not require the use of a humidifier.

FC Boost Converter

A new compact, high-efficiency, high-capacity converter has been developed to boost power generated in the Toyota Fuel-Cell Stack to 650 volts. Increasing the voltage has made it possible to reduce the size of the electric motor and the number of Toyota Fuel-Cell Stack fuel cells, leading to a smaller, higher-performance Toyota Fuel Cell System, thereby reducing system costs.

High-pressure Hydrogen Tanks

Tanks with a three-layer structure made of carbon fibre-reinforced plastic and other materials are used to store hydrogen at a very high pressure of 70 MPa (70 MegaPascals, or approximately 700 bar or 10,000 psi). Compared with the high-pressure hydrogen tanks used in the Toyota FCHV-adv model, tank storage has been increased by approximately 20 per cent while both weight and size have been reduced to achieve a world-leading3 5.7 wt%4.

2. Safe and secure vehicle design with comprehensive range of safety features

FCV safety measures

The Mirai was designed with safety as a top priority, based on the basic approach of ensuring that hydrogen does not leak, and in the unlikely event that any leaks do occur, ensuring immediate detection and stoppage of hydrogen flow and preventing accumulation of hydrogen within the car body.

Development of high-pressure hydrogen tanks with excellent hydrogen permeation prevention performance, strength, and durability
Hydrogen sensors provide warnings and can shut off tank main stop valves
Hydrogen tanks and other hydrogen-related parts are located outside the cabin to ensure that if hydrogen leaks, it will dissipate easily.

Use of features such as a structure that efficiently disperses and absorbs impact energy across multiple parts ensures a high impact safety performance that protects the Toyota Fuel-Cell Stack and high-pressure hydrogen tanks during frontal, side or rear impacts.

The Toyota Fuel-Cell Stack frame is constructed from a newly-developed thermoplastic carbon fibre-reinforced plastic, which is light, strong, and easily mass-produced. This protects the Toyota Fuel-Cell Stack by absorbing impact shocks from road bumps and other road interference.

A full range of advanced safety equipment appropriate for next-generation vehicles

Standard inclusion of advanced safety technologies:
A Pre-collision System (with millimetre-wave radar) helps prevent collisions or reduce collision damage through alerts and brake control if a high likelihood of collision is detected.
A Lane Departure Alert system uses a camera to detect white or yellow lane markings and alerts the driver when the vehicle is about to deviate from its lane.
Drive-start Control limits sudden starts or sudden acceleration during gear-shift operation.
A Blind Spot Monitor uses radar to detect vehicles in adjacent lanes and helps rear view confirmation when changing lanes.

1As measured by Toyota when refuelling at a hydrogen station supplying hydrogen at a pressure of 70 MPa under the SAEe J2601 Standard conditions (ambient temperature: 20C, hydrogen tank pressure when fuelled: 10 MPa). Time will vary depending on hydrogen fuelling pressure and ambient temperature.
2Channels arranged in a fine three-dimensional lattice structure. Enhances the dispersion of air (oxygen) thereby enabling uniform generation of electricity on cell surfaces.
3As of November 2014, according to TMC research.
4Hydrogen storage mass per tank weight.

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Toyota Mirai has an easily recognisable exterior design with a novel face that underscores the vehicle's individuality.

A new technique has been employed in the front face design to emphasise the left and right grilles that draw in air for the oxygen supply and for FC system cooling. The novel front face underscores the vehicle's individuality.

The elegant side profile evokes the flowing shape of a droplet of water to express the vehicle's characteristic of drawing in air and emitting water. The roof-side rails and bonnet appear to pop out of the body to create the impression of a low-to-the-ground vehicle while communicating a futuristic feeling.

The rear of the vehicle presents a bold profile with a trapezoidal shape extending from the licence-plate garnish to the bottom of the bumper corners and out toward the wheels, while the top of the bumper emphasises width and expresses a powerfully stable stance. It also creates an agile and clean impression of air passing through and under the bumper.

The headlights exhibit high-tech and sophisticated luxury through a novel design that presents an ultra-thin profile with an inline arrangement of four LED lights plus visible heat sinks and other optical equipment. The front turn signals and clearance lights are separate from the headlights, contributing to an ultra-thin headlight profile at the same time as merging with the side grilles. This creates an advanced clean design with aerodynamics that improve airflow.

The Mirai comes with 17-inch aluminium wheels that have been made lighter using an engraving process5.

Six body colours are available.

The Mirai's profile connects the front and rear in a seamless expression of space. It creates a sophisticated cabin space with soft padding on door trims and other interior surfaces, and a high-luminance silver finish throughout.

The front seats provide superior body fit and hold through an integrated cover/seat foaming production process6. Eight-way adjustable power seats for achieving the optimal seat position and a motorized lumbar support function are installed as standard on the driver's and passenger's seats.

The centre meter cluster located in the central top level of the instrument panel includes a speedometer and multi-information display using a 4.2-inch high-definition thin-film transistor (TFT) liquid crystal display with a design that appears to pop out. The driver is able to change the display using controls mounted on the steering wheel.

Seat heater switches and other controls are operated via an electrostatic air-conditioning control panel by lightly touching the flat panel display.

Functions that provide a comfortable interior space come as standard, such as a steering-wheel heater and seat heaters (two temperature settings on all seats) that provide instant heat while greatly reducing power consumption, fully automatic left and right independent temperature-control air-conditioning with eco mode switches, and "Nanoe"7 air purification technology to fill the cabin with fresh air.

Three interior colours are available.

Battery layout enables abundant boot storage space.

5Manufacturing process used to reduce the weight of aluminium wheels. Metal is shaved from the intersecting line between the disk and rim to reduce the weight of each aluminium wheel by approximately 500 grams.
6In the previous process, seat pads were moulded separately and then covered. In the foaming process, the seat covers are placed into moulds and urethane material is directly inserted into them.
7A trademark of Panasonic Electric Works Co. Ltd.

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The high output Toyota Fuel-Cell Stack and optimal battery power control drive the electric motor and ensure powerful responsiveness at all vehicle speeds.

This provides an immediate increase in torque at the first press of the accelerator, and powerful and smooth acceleration thereafter.

Handling stability and ride comfort are both improved through the location of major parts such as the Toyota Fuel-Cell Stack and high pressure hydrogen tanks centrally under the floor to achieve a low centre of gravity and superior front-and-rear weight distribution, as well as the use of a high-rigidity body, which features enhanced rigidity around the rear suspension.

The full under-floor cover and aerodynamically designed clearance lights reduce wind resistance and contribute to improved fuel efficiency and handling stability.

Aero fins employed at the side of the rear combination lamps also improve straight-driving stability.

Outstanding quietness is achieved by electric motor drive at all speeds and reduced wind noise, plus full sealing of all body parts, and the use of sound-absorbing and sound-blocking materials optimally arranged around the cabin, including the use of noise-reducing glass for the windshield and all door windows.

The brake support mode makes efficient use of regenerative braking and improves braking performance when the driver wishes to greatly reduce vehicle speed such as when negotiating long downhill sections of road.

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