For exhaust gas, substances of concern, etc., we will not only make efforts for conformance to laws, regulations, and industrial self-regulations but also set target values higher than the regulation to further reduce the said substances.

[Design, development] Air pollution


Reducing exhaust gas

Compliance with domestic emission control regulations

Suzuki ensures that all new models conform to the 2005 emission control regulations (new long-term regulations). Among vehicles launched in FY2016, the number of models certified as "☆☆☆☆ low emission vehicles" was 40 types of 20 models in total as of the end of March 2016.
We will further promote activities to cut down on the amount of emissions, aiming to increase the types and models to be certified as “☆☆☆☆ low emission vehicles”.

Vehicles conforming to emission control regulations

  Number of types and models Ratio of production volume
Vehicles conforming to 2005 emission control regulations 8 models 13 types 17.1%
☆☆☆ low emission vehicle 50% lower than 2005 Emission Standard 3 models 3 types 0.5%
☆☆☆☆ low emission vehicle 75% lower than 2005 Emission Standard 20 models 40 types 82.4%

Compliance with emission control regulations in other countries

We promote introduction of clean emission vehicles that conform to the latest European emission regulations, Euro 6, including the RDE (Real Driving Emissions) regulations, into the market in Europe. We sell models that conform to the latest regulations also in India and China, and promote development to ensure conformity to the next-generation emission regulations planned in 2020 such as Bharat stage VI (India) and Stage 6 (China).

Catalyst technologies

It is indispensable to reduce emissions including when the engine is cold, in order to satisfy emission control regulations that are getting more stringent in all over the world. While reducing emissions from engines, we have been promoting improvement in performance of catalysts for exhaust-gas purification. We optimise the design of precious metal and rare earth used for catalysts, and concentrate precious metal effective for the performance of cold engines at the front section of the catalyst. Such zone-coated catalyst is adopted for strict emission control regulations in Japan, Europe, etc. In addition, we also adopt a thin-wall, high-cell-density catalyst excellent for purification of cold engines, and hexagonal cell catalyst that performs excellent purification during high-speed driving, etc. in order to clean exhaust gas all over the world.

Zone-coated catalyst

Reducing VOC (Volatile Organic Compounds)*1 in Car Interior

In order to further improve interior environment, we will continue to make efforts to reduce the amount of VOC by reviewing the materials, bonding agents, painting methods for interior parts, etc. For all new domestic automobile models sold since January 2006, we have successfully achieved lower cabin VOC levels than the target set by the Ministry of Health, Labour and Welfare, which is deemed as the automobile industry’s voluntary goal*2. In FY2016, we achieved the target for the new WagonR and Swift.
In addition to reduction of VOC that has concentration guideline, we are making efforts in producing more comfortable cabin environment for customers by setting goals for cabin odour and trying to minimise the odour.

Models achieving better values than the cabin VOC concentration guideline values in FY2016

  • *1 VOC is deemed as a cause of sick building syndrome (bringing about a headache and/or sore throat) and is known as a danger substance to public health.
  • *2 Japan Automobile Manufacturers' Association (JAMA) takes a voluntary approach to reducing the vehicle cabin VOC on 13 different substances defined by Japan's Ministry of Health, Labour and Welfare by imposing its voluntary targets, all of which are stricter than the government targets, on new passenger car models marketed from April 2007 and new commercial vehicle models sold from April 2008.

Cabin VOC measurement of the new WagonR Stingray

Sampling of the new WagonR Stingray


Reducing exhaust gas

We are working on reinforcement of purifying performance as exhasut gas reduction technology to meet the 2016 exhaust gas restriction in Japan.

Improvement in catalyst (tandem honeycomb)

Tandem honeycom was adopted for the V-Strom 650 launched in May 2017. Purifying performance is reinforced by changing from the coventional single honeycomb to a tandem honeycom structure, in which two honeycombs are positioned inline with space in between the two honeycombs.

Outboard Motors

Reducing exhaust gas

Compliance with domestic emission control regulations

Suzuki four-stroke outboard motors satisfy the year 2008 emission regulation values set by California Air Resources Board (CARB), the secondary regulation values set by the U.S. Environmental Protection Agency (EPA), and the year 2011 marine engine emission voluntary regulation values (secondary regulation) set by Japan Marine Industry Association.


Control of SOx and NOx emissions

Compliance with domestic emission control regulations

In order to prevent air pollution, we are making efforts in maintaining and controlling SOx (sulfur oxides) and NOx (nitrogen oxides) emission amounts that are emitted from boilers, etc. by setting higher voluntary standards. In FY2016, SOx emission amount increased owing to longer operating hours of the Kosai Plant incinerator from increased amount of industrial discharge. NOx emission amount also increased owing to introduction of co-generation power system for efficient use of energy in Kosai Plant.

S0x exhaust amount*1
  • *1 SOx emission amount is calculated according to fuel consumption from January to December.
  • [Area subject to totalisation] Domestic plants, die plant
N0x exhaust amount
  • *1 Due to the expanded scope of facilities covered by Air Pollution Control Law, the total amount of NOx emission increased in FY2013.

VOC reduction in the painting process

Great efforts are made to reduce emissions of VOC (solvent) used in the painting process.
The total emission in FY2016 including painting of automobile bodies, bumpers, and motorcycles was 3,164t/year.
In FY2016, we improved the painting method and equipment so that paint adheres to products more efficiently.
We will continue to improve the painting method etc. to reduce VOC emissions.

VOC emission amount in painting process

[Area subject to totalisation] Automobile body, motorcycle, domestic plants with each painting process of bumpers (Iwata, Kosai, Toyokawa, and Sagara Plants)

Control of water and soil contamination

Purification of plant effluent

Production wastewater and sewage produced in plants are purified at the company’s wastewater treatment facility before being released to rivers or public sewage. Efforts are made in reducing substances of concern upon releasing, by setting individual standards stricter than the wastewater standards specified in laws and restrictions.

Trends in amount of wastewater of domestic and major overseas manufacturing plants

  • 【Area subject to totalisation】
    • Suzuki : Takatsuka, Iwata, Kosai, Toyokawa, Osuka, and Sagara Plants
    • Domestic group manufacturing companies:Suzuki Auto Parts Mfg. (Suzuki Seimitsu Plant, Enshu Seiko Plant, Hamamatsu Plant), Suzuki Toyama Auto Parts, Suzuki Akita Auto Parts, and SNIC (Ryuyo Pipe Plant, Ryuyo Seat Plant, Hamakita Trim Plant, and Sagara Plant)
    • India: Maruti Suzuki India Ltd. and Suzuki Motorcycle India Private Ltd. (3 plants of 2 companies)
    • Indonesia: PT. Suzuki Indomobil Motor (3 plants of 1 company)
    • Thailand: Suzuki Motor (Thailand) Co., Ltd. and Thai Suzuki Motor Co., Ltd. (2 plants of 2 companies)
    • USA: Suzuki Manufacturing of America Corporation (1 plant of 1 company)
    • Hungary: Magyar Suzuki Corporation Ltd. (1 plant of 1 company)
    • Malaysia: Suzuki Motorcycle Malaysia SDN.BHD. (1 plant of 1 company)
    • Philippines: Suzuki Philippines Inc. (1 plant of 1 company)
    • Pakistan: Pak Suzuki Motor Co., Ltd. (1 plant of 1 company)
    • Cambodia: Cambodia Suzuki Motor Co., Ltd. (1 plant of 1 company)
    • Vietnam: Vietnam Suzuki Corp. (2 plants of 1 company)
    • Colombia: Suzuki Motor De Colombia S.A. (1 plant of 1 company)

Preventing the leakage of sewage

For the purpose of water quality management and maintenance, our analysis department periodically conducts analysis on plant effluent, groundwater, water used in factory processes, and industrial water to check the possibility of sewage leaking from any plant. If any abnormality should be found in the water quality, the relevant section will be immediately informed, and proper measures will be systematically carried out.
We were registered as the “Environmental Measurement Certification Business (Concentration)” of the Measurement Act in FY1994. Since then, we have continued to conduct field measurements and verify the measured industrial wastewater/wastes, while promoting the group-wide activities for prevention of contaminant outflow.



Soil and groundwater protection

Efforts for prevention of the proliferation of soil contamination

We are making efforts in purifying and removing contamination appropriately when soil contamination is found. In FY2016, we conducted soil survey 5 times in plants in Japan, and no soil contamination was found. In addition, our group manufacturing companies in Japan investigated geography and history in order to record the information about risks of soil contamination due to chemical substances etc. used in the past, and are completed at all 16 plants and group manufacturing companies.

Efforts for cleanup of groundwater

Since the organic chlorine compounds (trichloroethylene and cis-1, 2-dichloroethylen) were discovered in the groundwater at Takatsuka Plant in January of 1999, we have continued the groundwater cleanup efforts and have conducted measurements along the plant’s site boundaries. In addition, we started a biological remediation in March 2015 for groundwater cleanup by using microorganisms to complete the sanitisation as early as possible. Groundwater is being cleaned up owing to the effect of this bio-remediation. We will aim to complete the cleanup of organic chlorine compounds by continuing the bio-remediation.

[Design, development] Noise reduction


Reducing noise

Vehicle exterior noise

We are trying to reduce noise generated from automobiles in order to solve road traffic noise which is one of environmental problems. As for concrete actions, we are reducing various kinds of noises from the noise source in an automobile such as the engine, transmission, air-intake and exhaust systems, and tyres. At the same time, we are optimising the design of the sound insulation cover that is used to prevent the inside noises from being released to the outside of vehicle.
We are taking actions for the vehicle exterior noise regulations in Japan and other countries on all automobiles manufactured and sold by Suzuki.
The company also meets the new exterior noise restriction (R51-03) introduced in October 2016 in Japan for all of our new models.

Major Noise Prevention Measures

Vehicle interior noise

Also, to provide comfort and quiet interior environment to users, we are promoting reduction of vehicle interior noise by improving noise sources and taking sound absorption, sound insulation, and vibration damping measures.

Examples of noise-reduction measures for the new WagonR

  • Adoption of new engine
  • Change in engine mount support method and adoption of liquid-sealed engine mount
  • Improvement of body structure which combines lightweight body and performances in reducing noise and vibration
  • Reduction in steering vibration by adopting high-rigidity steering support
  • Adoption of noise-absorbing type molded headlining
  • Adoption of noise-absorbing pad in dash side panel
  • Adoption of noise-absorbing material under the carpet and damping material in floor panel
  • Equipment of noise-shutting cover inside the fender


Reducing noise

Example of applied product

The following describes our noise reduction efforts, taking an example of GIXXER.
To conform to the domestic noise regulation, while maintaining styling and output character, GIXXER adopts a number of structures with high noise reduction.

1 For air cleaners, intake noise has been reduced by securing enough volume and placing a resonator in an outlet pipe.
Also by making its inner wall into a rib structure for securing rigidity, radiated sound from air cleaner wall is reduced.

2 As for mufflers, exhaust noise has been reduced by securing enough volume. Also, by welding stainless steel mesh inside the muffler wall, radiated sound from muffler wall is reduced.


Reduction of odour and noise

Although we strictly follow the relevant regulations or laws, the odour and noise released from our plants may make local residents uncomfortable. Compliance with the laws and regulations is the minimum required CSR (corporate social responsibility). Aiming to be fully trusted by the local community, we will continuously promote necessary measures for prevention of noise and odour and elimination of the potential sources of them.

Noise measurement

[Production, products] Control of chemical substances

Purchasing new substances

Before our domestic plants adopt new materials of paints, oil, detergents, etc., the environmental management section examines the toxicity of chemical substances contained in the materials and the planned amount of use, as well as how to use and store them, and determines whether they are allowed to be used or not. The data collected through the research are managed as the Pollutant Release and Transfer Register (PRTR) data, which will be used for reducing the volume of those materials. Also, for raw materials, our SDS* is kept up-to-date to provide the latest chemical data.

*SDS (Safety Data Sheet): Sheet listing names, physical chemistry behaviour, hazards, and handling cautions, etc. of chemical substances

PRTR (Pollutant Release and Transfer Register) targeted substances

To reduce materials with environmental impact, we are working to reduce PRTR targeted substances.
The amount of emissions and transportation of them was 1,024 tons in FY2016.

Amount of PRR materials that are handled emitted and transported

[Area subject to totalisation] Headquarters, our domestic plants, Motorcycle Technical Center, Marine Technical Center