Our Approach to Environmentally Friendly Automobiles
Approaches and Strategies for Improving Fuel Economy
An automobile releases carbon dioxide (CO2) in proportion to the fuel consumed.
In recent years, major issues for automobile manufacturers are how to save fuel while in use and how to contribute to preventing global warming by reducing CO2 emissions.
We thoroughly pursue improvements in fuel efficiency by expanding use of direct fuel injection engine and introducing all-new, redesigned downsized turbo engines for internal combustion engine vehicles that account for the majority of our products, and aim for achieving top level fuel efficiency in segment with the net thermal efficiency of 40% or more.
In addition, in order to advance fuel efficiency for the vehicle overall, transmission efficiency was further advanced by friction reduction in the transmission, and the body was improved by promoting weight reduction by Subaru Global Platform (SGP), aerodynamic, and friction improvements in transmission functions overall.
Through these initiatives, we are considering development of a new-generation environmental strategy vehicle with a view to 2020 and beyond.
In addition, we are promoting development the deployment of electric vehicles that meet the US zero-emission vehicle (ZEV) regulations and fuel consumption regulations of various nations that are becoming more strict, aiming toward development of PHV vehicles true to the Subaru identity. And we will introduce them to the US market in 2018 and our EV globally in 2021.
Through these initiatives, we are aiming for the top class fuel efficiency among SUV category and will continue to work toward improving fuel efficiency.
Fuel Economy Standards
Japan: Achieved the FY2016 Fuel Economy Standards in 8 of 9 Weight Classes
The percentage of passenger cars meeting the FY2016 fuel economy standards was 93%, with 8 weight classes (one more than the previous year) of the 9 weight classes of the Subaru vehicles that are sold meeting the FY2016 fuel economy standards.
To meet the FY2021 fuel economy standards, we are introducing a newly developed down-sized turbo engine and an electric vehicle.
Fuel Economy Standards Achievement Status in FY2017
US: Achieved 2016 Model Year Corporate Average Fuel Economy (CAFE) Standards and Greenhouse Gas (GHG) Standards
While CAFE standards and GHG standards becoming stricter every model year, we met both standards for the 2016 model year.
Not only achiving fuel economy and CO2 regulations that are becoming stricter worldwide, we are also set to further spread vehicles with greater fuel economy in the global market.
Low Exhaust Emissions
Improvement and Popularization of Certified Low Emission Vehicles
All Subaru vehicles equipped with Natural Aspiration (N/A) engines are certified by the Japanese Ministry of Land, Infrastructure, Transport and Tourism to have achieved a 75% reduction from the regulatory values specified in the 2005 emissions standards, and the numbers of vehicles achieving the 75% reduction have remained in the higher 90% range of the total production quantity since FY2013. Additionally, all vehicles we produce are certified Ultra Low Emission Vehicles (U-LEV) achieving a 50% reduction from the regulatory values specified in the 2005 emissions standards.
Percentage of Low Emission Gasoline-powered Passenger Vehicles
We are also working to actively reduce road noise from automobiles.
We promote the development of technology that can effectively reduce vehicle noise from primary sources such as tires, engines and intake and exhaust systems.
The new model Impreza introduce to the market in October 2016 implemented a low-noise tire with the new platform. As a result, excellent fuel efficiency and pleasant drivability were maintained while allowing a reduction in traffic noise while driving in urban areas.
Management of Chemical Substances (Operation of the IMDS)
Since the enforcement of the European Union's Registration, Evaluation and Authorization of Chemicals (REACH) regulation, various chemical substances have been regulated in countries across the world, and at the same time, the automobile industry has been required to disclose information and foster proper management regarding the use of chemical substances in automobiles.
We are promoting improvement in supply chain management by using the IMDS in order to identify the names and amounts of each chemical substance used in the several tens of thousands of parts that are in our automobiles.
Through these measures, we are discontinuing the use of environmentally hazardous substances (lead, mercury, cadmium, hexavalent chromium, etc.), replacing regulated substances with alternatives, and we are promoting a management system that can promptly disclose information regarding the usage of substances requiring management according to EU REACH, etc.
Life-cycle Assessment (LCA)
The LCA method to quantitatively evaluate the environmental impact through the life cycle of product and service is considered to be an effective tool for building a sustainable society.
We utilize this LCA to quantify the environmental impact of an automobile over its life cycle (over each step of mining of raw materials, manufacturing, transportation, use, and disposal) and develops and designs products with low environmental impact.