Eugenio,77
mail@toyota-club.net
© Toyota-Club.Net
Oct 2010 - Jan 2022

The designation of Japanese domestic market cars contains the code indicated compliance with local emission regulations, vehicle category and engine type.


The first Japanese emission regulations (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. Throughout 2000s there was a transition to more advanced test cycles. Since 2000 regulations imply several additional grades of emissions reduction, which give some financial benefits to the car owners.

Note, that the directly comparison of Japanese and European standard values is not possible, because they are based on a completely different test cycles until the very end of 2010s.

Emission regulations (g/km) for passenger cars with gasoline engines (pre-2018).

Regulations	Year	CO	HC	NOx	Cycle	Sticker
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 2009	2011	1.150	0.050	0.050	JC08	-

In 2009, the standards for diesel models and gasoline models with direct fuel injection were modified.

In 2018, another major revision of emission standards was carried out and new codes were introduced.



Average emission regulations for cars and trucks (beyond 2018)


In 2019, MLIT and METI issued a new fuel economy standards for passenger vehicles starting in MY2030.



Since 2021, Japan adopted WLTC (Worldwide Harmonized Light Vehicle Test Cycle), with the exception of the extremely high speed driving part.



3-digit compliance code (since Japan 2005 regs)

1st symbol
Emission regulation	Low emissions certification	Symbol
2005	No Passenger cars, light, medium and heavy cargo	A
	50% Passenger cars, light and medium cargo	C
	75% Passenger cars, light and medium cargo	D
	NOx 10% + PM 10% Heavy cargo	B
	NOx 10% Heavy cargo	N
	PM 10% Heavy cargo	P
2006 2-wheel and special vehicles	No	J
2007	No Motorcycles, special vehicles and light cargo	E
	50% Light truck	G
	75% Light truck	H
2008 Special vehicles	No	K
2009 Direct injection gasoline vehicles with NOx catalyst and diesel vehicles (passenger cars, light and medium cargo (2.5-3.5 t), some heavy cargo (above 12 t)	No exc. diesel PHP	L
	No diesel PHP	F
	50%	M
	75%	R
	10%	Q
2010 Diesel vehicles (1.7-2.5 t medium cargo, 3.5-12 t heavy cargo)	No	S
	10%	T
2011 Special vehicles	No	U
2012 Special vehicles	No	W
2013 Special vehicles	No	X
2014 Diesel special vehicles	No	Y
Not subject to regulation		Z
2016 Diesel heavy cargo, motorcycles	No	2
2018 Passenger cars, light cargo, medium and light trucks	No	3
	25%	4
	50%	5
	75%	6
	No PHP cars	7
2020	No Motorcycles	8
2nd symbol
Fuel	Hybrid version	Symbol
Gasoline / LPG	Yes	A
	No	B
Diesel	Yes	C
	No	D
	Yes (heavy cargo)	J
	No (heavy cargo)	K
	Yes (5% heavy cargo)	N
	No (5% heavy cargo)	P
	Yes (10% heavy cargo)	Q
	No (10% heavy cargo)	R
	Yes (15% heavy cargo)	S
	No (15% heavy cargo)	T
CNG	Yes	E
	No	F
Methanol	Yes	G
	No	H
Gasoline+Electric / LPG+Electric	Yes	L
Diesel+Electric	Yes	M
Other	Yes	Y
	No	Z
3rd symbol
Usage	Weight etc.	Symbol
Passenger car	except diesel regulations '2005	A
	diesel reg. '2005 (vehicle weight below 1265 kg)	B
	diesel reg. '2005 (vehicle weight above 1265 kg)	C
Cargo	mini truck	D
	vehicle total weight below 1.7 t	E
	vehicle total weight 1.7-3.5 t	F
	vehicle total weight above 3.5 t	G
2-wheel etc.	type 1 moto-bicycle	H
	type 2 moto-bicycle	J
	light motorcycle	K
	small motorcycle	L
Special vehicle	output 19-37 kW	M
	output 37-56 kW	N
	output 56-75 kW	P
	output 75-130 kW	R
	output 130-560 kW	S
	output 19-560 kW (gasoline/LPG limited)	T
Ultra-compact mobility	Cargo	Y
	Passenger car	Z

Examples of compliance codes

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	meets 1978 reg.	0.2500	0	2.32
GF	1978/1998	Gasoline	meets 1998 regs (idle emissions)	0.2500	0	2.32
HK	1978/1998	Gasoline	meets 1998 regs (idle emissions, hybrids)	0.1250	0	2.32
GH	2000	Gasoline	meets 2000 regs	0.0800	0	2.32
HN	2000	Gasoline	meets 2000 regs (hybrids)	0.0400	0	2.32
TA	2000	Gasoline	☆ (25% lower than 2000 regs)	0.0600	0	2.32
XA	2000	Gasoline	☆ (25% lower than 2000 regs, hybrids)	0.0600	0	2.32
LA	2000	Gasoline	☆☆ (50% lower than 2000 regs)	0.0400	0	2.32
YA	2000	Gasoline	☆☆ (50% lower than 2000 regs, hybrids)	0.0400	0	2.32
UA	2000	Gasoline	☆☆☆ (75% lower than 2000 regs)	0.0200	0	2.32
ZA	2000	Gasoline	☆☆☆ (75% lower than 2000 regs, hybrids)	0.0200	0	2.32
ABA	2005	Gasoline	meets 2005 regs	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 ☆☆☆ (50% lower than 2005 regs)	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 ☆☆☆☆ (75% lower than 2005 regs)	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	meets 1986/87 regs	0.7000	0.2	2.58
X	1990-92	Diesel	meets 1990 regs (<1.265t)	0.5000	0.2	2.58
Y	1990-92	Diesel		0.5000	0.2	2.58
KD	1994	Diesel	meets 1995 regs	0.5000	0.2	2.58
KE	1997-98	Diesel	meets 1997 regs (<1.265t)	0.4000	0.08	2.58
HA	1997-98	Diesel		0.2000	0.04	2.58
KH	1997-98	Diesel	meets 1998 regs (>1.265t)	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	meets 2002 regs (GW>1.265t)	0.2800	0.052	2.58
KR	2003	Diesel	meets 2003 regs (GW>2.5t)	-	-	-
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