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The Challenges Facing Automobile Manufacturers
Meeting our responsibilities, while creating cars people want to drive
Development targets and attainment status for products that reduce air pollution and help prevent global warming
Category Objective
Results for FY 2004
Prevention of atmospheric pollution
Reducing exhaust emissions
90% of passenger vehicles approved as SU-LEV
or U-LEV by end of FY 2005
Demio, Verisa, Premacy and Axela (1.5-liter) models approved as SU-LEV
87.3% of passenger vehicles approved as SU-LEV (49.2%) or U-LEV (38.1%)
Prevention of global warming
Improved fuel efficiency
(reduced CO2 emissions)
Achieve fuel efficiency standards set for 2010
in all passenger vehicle weight ranks during FY 2005
All Verisa models and Premacy (2-liter models) achieved 2010 standards for fuel efficiency
5 vehicle weight classes (out of 7) achieved 2010 fuel efficiency standards
Prevention of atmospheric pollution
and prevention of global warming
Research and development of
clean energy vehicles
Promote the development of Hydrogen Rotary
Engine vehicles in preparation for leasing
RX-8 hydrogen rotary engine vehicle received approval from Ministry of Land,
Infrastructure and Transport and began public road testing
Hydrogen fuel station opened
Improved fuel efficiency (reduction in CO2 emissions)
2010 fuel efficiency standards cleared in five weight classes
Mazda aims to achieve fuel efficiency standards set for 2010 in all
passenger vehicle weight classes during FY 2005, in order to reduce
CO2 emissions. During 2004, five weight classes achieved this objective.
Improving fuel efficiency technology of MZR engine
The MZR engine, with its new-generation design and components, is
playing a significant role in contributing to Mazda's fuel efficiency
improvements. The MZR engine utilizes various technologies such as S-
VT, as well as measures to reduce engine weight, and offers a specific
example of Zoom-Zoom output performance and smooth engine sound,
along with excellent fuel efficiency technology and low emissions.
Improving fuel efficiency of Automatic transmission
The new Premacy's improves fuel efficiency at high speeds with its
high gear-ratio fourth gear and slip control technology. The fuel cutoff
area has been expanded into the low speeds, with cutoff control, also
contributing to improved fuel efficiency. The electronically-controlled
Mazda's automatic four-speed transmission in the new Premacy and
Axela provides slope control, ensuring the driver of smooth shifting
that perfectly fits his or her sensitivity.
Reduction of vehicle weight
Weight reduction is effective for fuel efficiency.
Mazda has adopted mojoule technology to door and front body parts
for a long time.
The new model Premacy (Mazda5) employs a resin lift gate as new
generation multi functional unification module that contributes to
weight reduction.
Trend in average fuel efficiency by weight class
20
15
10
6
FY 2000 FY 2001 FY 2002 FY 2003 FY 2004
2
1The 1,000kg weight class was removed in FY 2003.
2Includes micro-mini from FY 2004.
1
20.32
20.15
18.15
16.85
11.63
11.05
9.40
750 875
1000 1250
1500
1750 2000
21.2
18.8
17.9
16.0
13.0
10.5
8.9
Fuel efficiency
standard
for 2010
Combining Zoom-Zoom high performance with environmental capabilities
At Mazda, we have achieved a combination of cleaner emissions and better
fuel efficiency that mean that almost all our cars now qualify for reductions in
automobile tax and purchase tax under the Automobile Green Tax system.
The Mazdaspeed Atenza, which is due to go on sale in August 2005, features
our newest 2.3L direct injection gasoline turbo engine MZR 2.3 DISI Turbo.
Using a direct injection engine means that emissions gases are released at a
lower temperature, and allows the car to meet standards for approval under
both SU-LEV Through achieving an extremely high compression ratio, fuel
efficiency is also within the category of +5% on fuel efficiency standards for
2010. Its high output 200kW (272PS) and Zoom-Zoom high performance
means that the model offers not only the comfort and economy required for
day-to-day life, but also the tax reductions available under the Automobile
Green Tax system.
Mazdaspeed Atenza
Glossary: 1
S-VT Sequential valve timing
When driving at low or medium load, the intake valve opening timing is brought
forward to allow a larger overlap between valves, thereby increasing the amount
of residue gas and reducing pumping loss. This improves fuel efficiency while
at the same time reducing CO2 emissions, and also reduces output of NOx.
Glossary: 2
New Slope Control
Reduces unnecessary upwards gear changes on uphill
slopes, and allows an appropriate level of engine braking to
be implemented on downhill slopes. This allows increased
safety on expressways and when cornering downhill.
Glossary: 3
DISI
Direct Injection Spark Ignition
Injects high-pressure fuel into the combustion chamber,
achieving a cooling effect within the chamber.
Social & Environmental Report 2005