Cleaner Emissions

Cleaner Gas Emissions

Mazda is committed to mitigating air pollution from exhaust gases. To this end, the Company is working hard to develop low-emission vehicles.
The Company is steadily bringing to market vehicles that clear both SU-LEV, Japan's certification system for ultra-low-emission vehicles, and Euro 6, the stringent emissions regulations of the European Union (EU).

  • ■ As of March 31, 2015, a remarkable 98% of Mazda passenger models (not including compact mini vehicles and OEM-supplied vehicles) were SU-LEV-certified―the highest level*1 among Japanese automakers.
  • ■ The CX-5, the Mazda6, and the Mazda3, all equipped with the clean diesel engine SKYACTIV-D 2.2, were qualified for Euro 6 before the regulations took effect.

*1 As of March 2016, according to Mazda data

Development of Unique Single-Nanotechnology
Single Nanotechnology Dramatically Reduces Consumption of Precious Metals

There are global movements toward tighter control of exhaust emissions and fuel economy, market expansion due to rapidly growing emerging countries, and depletion of scarce resources. It is a very important challenge to reduce the use of expensive precious metals, such as rare metals (precious metals) and rare earths (ceria material), needed for three-way catalysts (or catalysts used for vehicles), enhancing catalyst efficiency.
In 2009, Mazda developed the world’s first single-nanocatalyst*2, that achieves both cleaner exhaust characteristics and higher durability while reducing the use of precious metals for vehicle catalysts by around 70% compared with the conventional figure in Mazda, and started introducing this technology in mass-produced vehicles.

Model of precious metal dispersion by new catalyst technology

Model of precious metal dispersion by new catalyst technology

Furthermore, Mazda succeeded in an additional 30% to 40% reduction in the consumption of precious metals needed for single-nanocatalyst. The technology was first introduced into the Demio (Mazda2 overseas) with SKYACTIV-G launched in 2011 and has been progressively introduced to Mazda vehicles globally. This technology, originally developed for gasoline engines, is also suitable as a catalyst in diesel particulate filters that remove soot from diesel engines and is employed in Mazda’s clean diesel engine SKYACTIV-D.
Mazda will continue promoting efforts to reduce consumption of precious metals and clean exhaust gas.

Development of Unique Single-Nano Catalyst Technology

*2 Catalyst featuring a technology to control finer materials structures than nanotechnology.

Proper Management of Chemical Substances and Heavy Metals

Mazda publishes Management Standards for Environmentally Hazardous Materials, specifying substances and heavy metals whose use in parts and materials it purchases is subject to restrictions (prohibited substances and substances for which reporting is required), to properly control the use of such hazardous materials.

Collection and Management of Automotive Parts Materials

Mazda is working across its entire supply chain to reduce the use of environmentally hazardous materials such as lead, mercury, hexavalent chromium and cadmium. Using the standardized IMDS*3, international system, the Company gathers information on the materials from suppliers (Met all of the voluntary targets of the Japan Automobile Manufacturers Association, Inc. (JAMA) (reduction of the use of lead and mercury, and prohibition of the use of hexavalent chromium and cadmium) by February 2007, earlier than the scheduled deadlines).

How IMDS Works

How IMDS Works

Measures Related to Application of IMDS

  • ■ To ensure that suppliers enter IMDS data appropriately, the Company publishes and distributes guidelines each year.
  • ■ The data gathered through IMDS is used to calculate the Company’s vehicle recycling rate and to comply with various regulatory regimes for chemical materials, such as REACH*4 in Europe.

*3 International Material Data System.
*4 Registration, Evaluation, Authorization and Restriction of Chemicals.

VOC Reductions: VOCs in Vehicle Cabins

To maintain a comfortable cabin environment, Mazda is committed to reducing VOCs*5 such as formaldehyde, toluene and xylene, which have been implicated as possible causes of sick building syndrome.

  • ■ In 1999 Mazda developed a deodorizing filter with the capacity to remove aldehydes (adopted as either standard or optional in core vehicle models).
  • ■ In new models, starting with the Demio (Mazda2 overseas) launched in 2007, Mazda reduced VOCs in the main materials used in the cabin, such as plastics, paints, and adhesives, thereby conforming with the indoor aerial concentration guidelines established by Japan’s Ministry of Health, Labour and Welfare.
  • ■ The Roadster (MX-5 overseas), launched in May 2015, conforms to the indoor aerial concentration guidelines of Japan’s Ministry of Health, Labor and Welfare.

*5 Volatile Organic Compounds

Reduction of Vehicle Noise

Mazda has established its own noise standards that are even stricter than the most recent legal requirements, and the Company is working to make its vehicles produce less noise when driving.
Driving noise comes from a variety of sources such as the engine, the exhaust system, the air intake system, the drive train, and the tires.
Mazda's in-house noise standards apply to all its vehicles, including both passenger vehicles and commercial vehicles.

Example of Anti-Noise Measures: CX-3

Example of Anti-Noise Measures: New Roadster/MX-5