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Environmental Initiatives

Making Environmentally Conscious Vehicles

Developing Technologies for the Next Generation : Technologies for the Next Generation


Mazda is developing multiple practical solutions to the issues facing the automobile industry.

Electric Vehicles

Electric Vehicle 'Demio EV'

In October 2012 in Japan, Mazda began leasing the Demio EV, an electric vehicle Mazda had independently developed based on the Mazda Demio. Using a highly efficient lithium-ion battery and Mazda's unique electric motor, the Demio EV delivers an exhilarating driving experience, including powerful acceleration, precise handling, and comfortable ride. It also achieves an outstanding driving range of 200 kilometers (JC08 mode test cycle measured by Mazda). The Demio EV maintains the same cabin space and cargo carrying capacity as the base model Demio. As a zero-emissions vehicle that emits no CO2 or other pollutants during driving, Mazda sold 75 units in FY March 2013 and 33 units in FY March 2014 mainly to local governments and corporate customers in the Chugoku region in Japan. Mazda will continue addressing various challenges, including longer driving range, based on customer feedback.

Mazda Demio EV specifications
Model name Demio EV
Drive FF
Seating capacity Five
Dimensions and weight Overall length/width/height*1 3900mm/1695mm/1490mm
Vehicle weight*1 1180kg
Performance AC electric power consumption (JC08 mode test cycle)*1 100Wh/km
Driving range on a single charge (JC08 mode test cycle)*1 200km
Drive battery Type Lithium-Ion batteries
Total voltage*1 346V
Total electric energy*1 20kWh
Motor Max. output*1 75kW<102PS>/5200 - 12000rpm
Max. torque*1 150N·m<15.3kgf·m>/0 - 2800rpm
Charging time Normal charge (AC200V·15A)*2 Approx. 8 hours (full charge)
Fast charge*3 Approx. 40 minutes (80% charge)
  • *1Measured by Mazda.
  • *2Amount of time required to charge battery after low battery warning light comes on. Given time is only a guide. Actual charging time may vary depending on air temperature and condition of power source.
  • *3Amount of time required when using a 50 kW fast charger. Given time is only a guide. Actual charging time may vary depending on specifications of the charger.

Development of the RE Range Extender

Demio fitted with Mazda RE Range Extender

One of the biggest problems with electric vehicles is short driving range. As one of the approaches to resolve this issue, Mazda has been promoting research and development to use, as a power generator, an internal combustion engine applicable to various fuels around the world that are locally produced for local consumption. Mazda RE Range Extender, released in FY March 2014, features a compact and quiet rotary engine shoehorned under the hatchback's rear trunk floor, enabling its application into the base EV models for an extended driving range without trading trunk area capacity.


Development of Compressed Natural Gas (CNG) Technology

With energy sources becoming diversified and extraction of shale gas increasingly accelerated in the US, compressed natural gas (CNG) is generating a lot of attention as an alternative fuel.
Mazda is promoting technology development to provide both driving pleasure and outstanding environmental performance by using CNG's characteristics of significantly lower CO2 exhaust emitted when burned and a high octane rating*4 to optimize SKYACTIV-G's high compression ratio. The Mazda3, SKYACTIV-CNG Concept, which debuted at the 43rd Tokyo Motor Show in November 2013, features a dual fuel system that runs on both gasoline and CNG.

Mazda3 SKYACTIV-CNG Concept
  • *4In a gasoline engine, a measure of a fuel's resistance to knocking (knocking noise and vibration caused by abnormal combustion that results from spontaneous ignition of the air/fuel mixture due to high temperature and pressure in the cylinder).

Development of the Hydrogen Rotary Engine

Hydrogen is clean energy that offers excellent environmental performance with no CO2 emissions and that can be generated from various sources. Since the announcement of the Mazda HR-X, the first hydrogen rotary engine vehicle, at the 1991 Tokyo Motor Show, Mazda has been promoting research and development of hydrogen rotary engines. The Mazda RX-8 Hydrogen RE and Mazda Premacy (Mazda5 overseas) Hydrogen RE Hybrid are equipped with a dual-fuel system, so the vehicles can run on gasoline if there is no hydrogen available. In November 2013, Mazda Premacy Hydrogen RE Range Extender EV, an electric vehicle with a significantly improved driving range, based on the Mazda Premacy Hydrogen RE Hybrid, was developed.

Mazda Premacy (Mazda5 overseas) Hydrogen RE Hybrid

The Mazda Premacy Hydrogen RE Hybrid incorporates a hybrid system that improves energy efficiency, delivering improved acceleration with a driving range of 200 km using hydrogen.

Mazda Premacy Hydrogen
RE Hybrid Layout Image
Overview of the Hydrogen
RE Hybrid System
Main Specifications of Mazda Premacy Hydrogen RE Hybrid
Base model Mazda Premacy
Overall length 4,565mm
Overall width 1,745mm
Overall height 1,620mm
Seating capacity Five persons
Base engine Mazda Hydrogen rotary engine (with a dual-fuel system)
Fuel Hydrogen and gasoline
Fuel tank 35 MPa high-pressure tank for hydrogen gas and a gasoline tank
Maximum output 110kW
Motor AC synchronous motor
Generator AC synchronous generator
Battery Lithium ion

Mazda Premacy (Mazda5 overseas) Hydrogen RE Range Extender EV

Mazda Premacy Hydrogen RE Range Extender EV

The Mazda Premacy Hydrogen RE Range Extender EV adapts a larger high-voltage battery, plug-in-system, and improved thermal-efficiency-improved engine. Its driving range with clean energy such as hydrogen and electricity is 150 km longer than that of the Mazda Premacy Hydrogen RE Hybrid. This is an ultimate gasoline-free zero-emissions vehicle.

Main Specifications of Mazda Premacy Hydrogen RE Range Extender EV
Base model Mazda Premacy
Overall length 4,565mm
Overall width 1,745mm
Overall height 1,620mm
Seating capacity Five persons
Base engine Mazda Hydrogen rotary engine
Fuel/energy Hydrogen/electricity (plug-in-system)
Fuel tank 35 MPa high-pressure tank for hydrogen gas
Maximum output 110kW
Motor AC synchronous motor
Generator AC synchronous generator
Battery High-capacity lithium ion
History of Mazda's Hydrogen Vehicle Development
1991 Announced the first hydrogen rotary engine vehicle, the HR-X, at the Tokyo Motor Show
1993 Announced the second hydrogen rotary engine vehicle, the HR-X2, at the Tokyo Motor Show
Developed MX-5 test vehicle equipped with a hydrogen rotary engine
1995 Conducted Japan's first public road tests of a hydrogen rotary engine vehicle, the Capella Cargo
2003 Announced a prototype RX-8 with the hydrogen rotary engine at the Tokyo Motor Show
2004 Tested the prototype RX-8 with hydrogen rotary engine on public roads
2005 Announced Premacy Hydrogen RE Hybrid concept car
2006 Began leasing of the world's first hydrogen RE vehicle, the RX-8 Hydrogen RE
2007 Signed an agreement to provide RX-8 Hydrogen REs to HyNor, a Norwegian national transportation project
2008 Tested an RX-8 Hydrogen RE validation vehicle on public roads in Norway
2009 Commenced commercial leasing of the Premacy Hydrogen RE Hybrid in Japan Began leasing of RX-8 Hydrogen RE for the HyNor Project
2013 Developed the Premacy Hydrogen RE Range Extender EV
Commenced public road test of leased vehicles

Compatibility with Bioethanol Mixed Fuel

Mixed fuel consisting partly of bioethanol, which is made from plants, is attracting attention in North America and Europe for its effectiveness in reducing CO2 emissions. Mazda is proud to sell vehicles that are compatible with this eco-friendly fuel.

Present Status

  • Mazda vehicles that are compatible with E10 (gasoline mixed with 10% ethanol) are sold in North America and Europe.
  • In Thailand, the Mazda3 compatible with E20 (gasoline mixed with 20% ethanol) became available in FY March 2008, and the Mazda2 corresponding to E20 became available in FY March 2010. In FY March 2014, the new Mazda3 compatible with E85 (gasoline mixed with 85% ethanol) became available.
  • In Japan, models equipped with a SKYACTIV-D 2.2 clean diesel engine compatible with B5 (diesel mixed with 5% biodiesel fuel) became available in FY March 2012 for the CX-5, in FY March 2013 for the Atenza (Mazda6 overseas), and in FY March 2014 for the new Axela (Mazda3 overseas).

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