MAZDA:CO2 reduction | Initiatives in Manufacturing

Mazda promotes the efficient use of energy while aiming to reduce CO₂ emissions in the area of manufacturing.

The total CO₂ emissions from Mazda's four principal domestic plants*1 (including R&D and other indirect areas) in FY March 2012 was reduced by 42.6% compared with FY March 1991 levels due to the following measures.

Further Implementation of Monotsukuri Innovation*2
Improvements in overall facility operating efficiency
Concentrating production and reducing losses from unnecessary work and equipment downtime
Installation of solar panels

Total CO₂ emissions from Mazda's four principal domestic plants reduced by 42.6% (584,000tons - CO₂)
Emissions per unit of sales revenue reduced by 17.1% (37.9 t-CO₂/100 million yen)

*1Head Office (Hiroshima); Miyoshi Plant; Hofu Plant, Nishinoura District; Hofu Plant, Nakanoseki District
*2For details, see the Mazda Global Site Investor Relations page

CO₂ Emissions from Mazda's Four Principal Domestic Facilities/CO₂ Emissions per Unit of Sales Revenue

CO<sub>2</sub> Emissions from Mazda's Four Principal Domestic Facilities/CO<sub>2</sub> Emissions per Unit of Sales Revenue

Energy Consumption Breakdown at Mazda's Four Principal Domestic Plants

Unit: (Thousands of GJ/year)

	1991	2008	2009	2010	2011	2012
Electricity	4,722	7,893	6,754	6,203	6,579	6,259
Industrial steam	0	1,658	1,634	1,422	1,468	1,447
Coal	5,082	0	0	0	0	0
Coke	766	440	319	335	345	277
Fuel oil A	599	136	43	45	69	30
Fuel oil B	11	0	0	0	0	0
Fuel oil C	1,188	349	81	91	81	60
Gasoline	189	119	90	68	72	54
Kerosene	100	17	9	11	13	13
Diesel	81	41	34	30	33	41
LPG	989	61	50	45	50	48
City gas	21	1,864	1,444	1,385	1,447	1,274
Total	13,748	12,578	10,458	9,635	10,157	9,503

Energy Consumption Breakdown at Mazda's Four Principal Domestic Plants

The Product development, manufacturing and purchasing related divisions are mutually cooperating to look five to ten years ahead into the future, working to enable package planning of future models that transcends vehicle ranks and segments so as to improve the efficiency of product development and manufacturing of diverse products.

This has allowed consolidation of 40 steps on the machining line to 4 parallel steps, achieving a significant reduction in energy consumption.

Improving the facility operation rate, shortening cycle time, and other measures are being taken to optimize the line process as well as the entire manufacturing process.

Also, losses in each step from production to consumption of energy are reanalyzed to further cut losses.

1. Cutting losses during energy production

Minimizing losses through compressors, boilers, etc. during energy production is promoted.

2. Cutting losses during energy supply

Minimizing losses between production and consumption of energy in the form of air, steam, electricity, etc. through measures such as preventing leakage and reducing electrical resistance is promoted.

3. Cutting losses during non-operating times

Energy consumption is reduced by suspending the power supply during breaks, between shifts, and before and after work hours when the facility is not operating. In addition, the power supply is frequently suspended during very short non-operating periods within work hours to further cut losses.