Japan Emission Regulations. Marking

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Eugenio,77
mail@toyota-club.net
© Toyota-Club.Net
Oct 2010 - Jul 2018


The marking of RHD cars for Japanese domestic market contains the letter code (before model code) indicating compliance with local emission regulations, subject to vehicle category and engine type.


The first Japanese emission standards (for CO) appeared in 1966. During 1975-78 the standards for three types of emissions (CO, CH, NOx) were adopted, which were in effect for more than twenty years with minimal corrections. Considerably more strong regulations were consistently adopted in 2000 and 2005, and throughout 2000s there was a transition to more advanced and stringent test cycles. Actual regulations (since 2000) imply several additional grades of emissions reduction, compliance with which gives some financial benefits to the car owners.

Note, that directly compare of values from Japanese and European standards is not possible, because they are based on a completely different test cycles.

Table 1. Requirements for emissions (g/km) for passenger cars with gasoline engines.
Regulations Year CO HC NOx CycleSticker
Japan 1978 1978 2.700 0.390 0.480--
Japan 2000 2000 0.670 0.080 0.080 10-15-
Japan 2000+25% 2000 0.670 0.060 0.060 10-15
Japan 2000+50% 2000 0.670 0.040 0.040 10-15
Japan 2000+75% 2000 0.670 0.020 0.020 10-15
Japan 2005 2005 1.150 0.050 0.050 10-15+11-
Japan 2005+50% (ULEV) 2005 1.150 0.025 0.025 10-15+11
Japan 2005+75% (SULEV) 2005 1.150 0.013 0.013 10-15+11
Japan 2005 2008 1.150 0.050 0.050 10-15+JC08-
Japan 2005+50% (ULEV) 2008 1.150 0.025 0.025 10-15+JC08
Japan 2005+75% (SULEV) 2008 1.150 0.013 0.013 10-15+JC08
Japan / 2011 1.150 0.050 0.050 JC08-

Table 2. Emissions compliance marking examples.
CodeEmissions
Emeets the regulations 1978
GFmeets the regulations 1998 for idling emissions
GHmeets the regulations 2000
TA25% less than the regulations 2000
LA50% less than the regulations 2000
UA75% less than the regulations 2000
ABAmeets the regulations 2005
CBA50% less than the regulations 2005
DBA75% less than the regulations 2005
--
HKmeets the regulations 1998 for idling emissions (for hybrid vehicles)
HNmeets the regulations 2000 (for hybrid vehicles)
XA25% less than the regulations 2000 (for hybrid vehicles)
YA50% less than the regulations 2000 (for hybrid vehicles)
ZA75% less than the regulations 2000 (for hybrid vehicles)
AAAmeets the regulations 2005 (for hybrid vehicles)
CAA50% less than the regulations 2005 (for hybrid vehicles)
DAA75% less than the regulations 2005 (for hybrid vehicles)
--
Qmeets the regulations 1986/87 (for diesel vehicles)
Xmeets the regulations 1990 (for diesel vehicles, weight less than 1265 kg)
KDmeets the regulations 1995 (for diesel vehicles)
KEmeets the regulations 1997 (for diesel vehicles, weight less than 1265 kg)
KHmeets the regulations 1998 (for diesel vehicles, weight more than 1265 kg)
KNmeets the regulations 2002 (for diesel vehicles, weight more than 1265 kg)
KRmeets the regulations 2003 (for diesel vehicles, total weight more than 2500 kg)



In 2018 another revision of emission standards was carried out and new codes of conformity were introduced. Here is shown the part of the document relating to passenger cars with gasoline and diesel engines. A complete list including trucks, buses, as well as methanol, LPG and CNG versions can be found on the website of the ministry of transport.

Type Year Fuel Emission level NOx emission PM emission CO2 emission
- -1975 Gasoline 2.1800 0 2.32
A 1975 Gasoline 1.2000 0 2.32
B 1976 Gasoline 0.6000 0 2.32
C 1976 Gasoline 0.6000 0 2.32
E 1978/1998 Gasoline 0.2500 0 2.32
GF 1978/1998 Gasoline 0.2500 0 2.32
HK 1978/1998 Gasoline 0.1250 0 2.32
GH 2000 Gasoline 0.0800 0 2.32
HN 2000 Gasoline 0.0400 0 2.32
TA 2000 Gasoline 0.0600 0 2.32
XA 2000 Gasoline 0.0600 0 2.32
LA 2000 Gasoline ☆☆ 0.0400 0 2.32
YA 2000 Gasoline ☆☆ 0.0400 0 2.32
UA 2000 Gasoline ☆☆☆ 0.0200 0 2.32
ZA 2000 Gasoline ☆☆☆ 0.0200 0 2.32
ABA 2005 Gasoline 0.0500 0 2.32
AAA 2005 Gasoline 0.0250 0 2.32
ALA 2005 Gasoline 0.0125 0 2.32
CAA 2005 Gasoline New ☆☆☆ 0.0250 0 2.32
CBA 2005 Gasoline New ☆☆☆ 0.0250 0 2.32
CLA 2005 Gasoline New ☆☆☆ 0.0250 0 2.32
DAA 2005 Gasoline New ☆☆☆☆ 0.0125 0 2.32
DBA 2005 Gasoline New ☆☆☆☆ 0.0125 0 2.32
DLA 2005 Gasoline New ☆☆☆☆ 0.0125 0 2.32
LBA 2009 Gasoline 0.0500 0 2.32
LAA 2009 Gasoline 0.0250 0 2.32
LLA 2009 Gasoline 0.0125 0 2.32
MBA 2009 Gasoline New ☆☆☆ 0.0250 0 2.32
MAA 2009 Gasoline New ☆☆☆ 0.0250 0 2.32
MLA 2009 Gasoline New ☆☆☆ 0.0250 0 2.32
RBA 2009 Gasoline New ☆☆☆☆ 0.0250 0 2.32
RAA 2009 Gasoline New ☆☆☆☆ 0.0250 0 2.32
RLA 2009 Gasoline New ☆☆☆☆ 0.0250 0 2.32
QBA 2009 Gasoline New ☆ 0.0450 0 2.32
QAA 2009 Gasoline New ☆ 0.0450 0 2.32
QLA 2009 Gasoline New ☆ 0.0450 0 2.32
3BA 2018 Gasoline 0.0500 0 2.32
3AA 2018 Gasoline 0.0250 0 2.32
3LA 2018 Gasoline 0.0125 0 2.32
4BA 2018 Gasoline New ☆☆☆ 0.0375 0 2.32
4AA 2018 Gasoline New ☆☆☆ 0.0375 0 2.32
4LA 2018 Gasoline New ☆☆☆ 0.0375 0 2.32
5BA 2018 Gasoline New ☆☆☆☆ 0.0250 0 2.32
5AA 2018 Gasoline New ☆☆☆☆ 0.0250 0 2.32
5LA 2018 Gasoline New ☆☆☆☆ 0.0250 0 2.32
6BA 2018 Gasoline New ☆☆☆☆☆ 0.0125 0 2.32
6AA 2018 Gasoline New ☆☆☆☆☆ 0.0125 0 2.32
6LA 2018 Gasoline New ☆☆☆☆☆ 0.0125 0 2.32
- -1979 Diesel 1.3400 0.2 2.58
K 1979 Diesel 1.2000 0.2 2.58
N 1982-83 Diesel 1.0200 0.2 2.58
P 1982-83 Diesel 1.0200 0.2 2.58
Q 1986-87 Diesel 0.7000 0.2 2.58
X 1990-92 Diesel 0.5000 0.2 2.58
Y 1990-92 Diesel 0.5000 0.2 2.58
KD 1994 Diesel 0.5000 0.2 2.58
KE 1997-98 Diesel 0.4000 0.08 2.58
HA 1997-98 Diesel 0.2000 0.04 2.58
KH 1997-98 Diesel 0.4000 0.08 2.58
HD 1997-98 Diesel 0.2000 0.04 2.58
DA 1997-98 Diesel 0.3000 0.06 2.58
WA 1997-98 Diesel 0.3000 0.06 2.58
DB 1997-98 Diesel ☆☆ 0.2000 0.04 2.58
WB 1997-98 Diesel ☆☆ 0.2000 0.04 2.58
DC 1997-98 Diesel ☆☆☆ 0.1000 0.02 2.58
WC 1997-98 Diesel ☆☆☆ 0.1000 0.02 2.58
DK 1997-98 Diesel 0.3000 0.06 2.58
WK 1997-98 Diesel 0.3000 0.06 2.58
DL 1997-98 Diesel ☆☆ 0.2000 0.04 2.58
WL 1997-98 Diesel ☆☆ 0.2000 0.04 2.58
DM 1997-98 Diesel ☆☆☆ 0.1000 0.02 2.58
WM 1997-98 Diesel ☆☆☆ 0.1000 0.02 2.58
KM 2002 Diesel 0.2800 0.052 2.58
HT 2002 Diesel 0.1400 0.026 2.58
KN 2002 Diesel 0.2800 0.052 2.58
HU 2002 Diesel 0.1400 0.026 2.58
TF 2002 Diesel 0.2100 0.039 2.58
XF 2002 Diesel 0.2100 0.039 2.58
TG 2002 Diesel 0.2100 0.039 2.58
XG 2002 Diesel 0.2100 0.039 2.58
LF 2002 Diesel ☆☆ 0.1400 0.026 2.58
YF 2002 Diesel ☆☆ 0.1400 0.026 2.58
LG 2002 Diesel ☆☆ 0.1400 0.026 2.58
YG 2002 Diesel ☆☆ 0.1400 0.026 2.58
UF 2002 Diesel ☆☆☆ 0.0700 0.013 2.58
ZF 2002 Diesel ☆☆☆ 0.0700 0.013 2.58
UG 2002 Diesel ☆☆☆ 0.0700 0.013 2.58
ZG 2002 Diesel ☆☆☆ 0.0700 0.013 2.58
ADB 2005 Diesel 0.1400 0.013 2.58
ADC 2005 Diesel 0.1400 0.013 2.58
ACB 2005 Diesel 0.0700 0.0065 2.58
ACC 2005 Diesel 0.0700 0.0065 2.58
AMB 2005 Diesel 0.035 0.00325 2.58
AMC 2005 Diesel 0.035 0.00325 2.58
CCB 2005 Diesel New ☆☆☆ 0.0700 0.0065 2.58
CCC 2005 Diesel New ☆☆☆ 0.0700 0.0065 2.58
CDB 2005 Diesel New ☆☆☆ 0.0700 0.0065 2.58
CDC 2005 Diesel New ☆☆☆ 0.0700 0.0065 2.58
CMB 2005 Diesel New ☆☆☆ 0.0700 0.0065 2.58
CMC 2005 Diesel New ☆☆☆ 0.0700 0.0065 2.58
DCB 2005 Diesel New ☆☆☆☆ 0.0350 0.00325 2.58
DCC 2005 Diesel New ☆☆☆☆ 0.0350 0.00325 2.58
DDB 2005 Diesel New ☆☆☆☆ 0.0350 0.00325 2.58
DDC 2005 Diesel New ☆☆☆☆ 0.0350 0.00325 2.58
DMB 2005 Diesel New ☆☆☆☆ 0.0350 0.00325 2.58
DMC 2005 Diesel New ☆☆☆☆ 0.0350 0.00325 2.58
LDA 2009 Diesel 0.0800 0.005 2.58
LCA 2009 Diesel 0.0400 0.0025 2.58
LMA 2009 Diesel 0.0200 0.00125 2.58
FDA 2009 Diesel 0.0800 0.005 2.58
FCA 2009 Diesel 0.0400 0.0025 2.58
FMA 2009 Diesel 0.0200 0.00125 2.58
MDA 2009 Diesel New ☆☆☆ 0.0400 0.0025 2.58
MCA 2009 Diesel New ☆☆☆ 0.0400 0.0025 2.58
MMA 2009 Diesel New ☆☆☆ 0.0400 0.0025 2.58
RDA 2009 Diesel New ☆☆☆☆ 0.0200 0.00125 2.58
RCA 2009 Diesel New ☆☆☆☆ 0.0200 0.00125 2.58
RMA 2009 Diesel New ☆☆☆☆ 0.0200 0.00125 2.58
QDA 2009 Diesel New ☆ 0.0720 0.0045 2.58
QCA 2009 Diesel New ☆ 0.0720 0.0045 2.58
QMA 2009 Diesel New ☆ 0.0720 0.0045 2.58
3DA 2018 Diesel 0.1500 0.005 2.58
3CA 2018 Diesel 0.0750 0.0025 2.58
3MA 2018 Diesel 0.0375 0.00125 2.58
4DA 2018 Diesel New ☆☆☆ 0.1125 0.00375 2.58
4CA 2018 Diesel New ☆☆☆ 0.1125 0.00375 2.58
4MA 2018 Diesel New ☆☆☆ 0.1125 0.00375 2.58
5DA 2018 Diesel New ☆☆☆☆ 0.0750 0.0025 2.58
5CA 2018 Diesel New ☆☆☆☆ 0.0750 0.0025 2.58
5MA 2018 Diesel New ☆☆☆☆ 0.0750 0.0025 2.58
6DA 2018 Diesel New ☆☆☆☆☆ 0.0375 0.00125 2.58
6CA 2018 Diesel New ☆☆☆☆☆ 0.0375 0.00125 2.58
6MA 2018 Diesel New ☆☆☆☆☆ 0.0375 0.00125 2.58
EA Electrical 0 0 0
ZAA Electrical 0 0 0
ZBA 2005 Fuel cell 0 0 0




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