Light-Duty Vehicles and Light-Duty Trucks: Tier 0, Tier 1, and National Low Emission Vehicle (NLEV) Implementatin Schedule


oEPA
United States
Environmental Protection
Agency
Office of Transportation and Air Quality
            EPA-420-B-16-009
                 March 2016
     Light-Duty Vehicles and Light-Duty Trucks: Tier 0, Tier 1, and National Low Emission Vehicle (NLEV) Implementation Schedule

Federal
(non NLEV)
Federal
(NLEV)
Vehicle
Type
LDV,
LDT1, &
LDT2
LDT3, &
LDT4
LDV&
LDT1
Test
Procedure
FTP
SFTPb
FTP
SFTPb
FTP
SFTP b> d
Emission
Category
TierO
Tier 1 °
TieM
TierO
TieM
TieM
TieM
TLEV
LEV
ULEV
ZEV
TieM
TLEV
LEV6
ULEV6
Emission
Standards
Cert&
In-Use
Certification b
Interim
In-Use
Final
In-Use b
Cert&
In-Use b
Cert&
In-Use
Certification b
Interim
In-Use
Final
In-Use b
Cert&
In-Use
Certification f
CertS
In-Use
Certification
Model Year
1992
100%
-
-
-
-
100%
-
-
-
-
-
-
-
-
-
-
-
-
-
1993
100%
-
-
-
-
100%
-
-
-
-
-
-
-
-
-
-
-
-
-
1994
60%
max
40%
min
40%
min
-
-
100%
-
-
-
-
-
-
-
-
-
-
-
-
-
1995
20%
max
80%
min
80%
min
-
-
100%
-
-
-
-
-
-
-
-
-
-
-
-
-
1996
0%
100%
60%
max
40%
-
50%
max
50%
min
50%
min
-
-
-
-
-
-
-
-
-
-
-
1997
-
100%
20%
max
80%
-
0%
100%
100%
-
-
-
-
-
-
-
-
-
-
-
1998
-
100%
0%
100%
-
-
100%
50%
max
50%
min
-
-
-
-
-
-
-
-
-
-
1999
-
100%
-
100%
-
-
100%
-
100%
-
2000
-
100%
-
100%
40%
-
100%
-
100%
-
NE Trading
Region
0.148
NMOG
fleet
avg. ah
-
-
-
-
0.095
NMOG
fleet
avg. g
-
-
-
-
2001
-
100%
-
100%
80%
-
100%
-
100%
-
2002
-
100%
-
100%
100%
-
100%
-
100%
40%
min
2003 a
-
100%
-
100%
100%
-
100%
-
100%
80%
min
All States Trading
Region
0.075
NMOG
fleet
avg. h
25%
min
25%
min
0.075
NMOG
fleet
avg.
50%
min
50%
min
0.075
NMOG
fleet
avg.
85%
min
85%
min
                                                                                                                    Continued

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Federal
(NLEV)
Vehicle
Type
LDT2
Test
Procedure
FTP
SFTP b> d
Emission
Category
TieM
TLEV
LEV
ULEV
ZEV
TieM
TLEV
LEV6
ULEV6
Emission
Standards
Certification f
Cert&
In-Use
Certification
Model Year
1992
-
-
-
-
-
-
-
-
-
1993
-
-
-
-
-
-
-
-
-
1994
-
-
-
-
-
-
-
-
-
1995
-
-
-
-
-
-
-
-
-
1996
-
-
-
-
-
-
-
-
-
1997
-
-
-
-
-
-
-
-
-
1998
-
-
-
-
-
-
-
-
-
1999
2000
NE Trad ing
Region
0.19
NMOG
fleet
avg. g'h
-
-
-
-
0.124
NMOG
fleet
avg. g
-
-
-
-
2001
2002
2003 a
All States Trading
Region
0.1
NMOG
fleet
avg. h
25%
min
25%
min
0.1
NMOG
fleet
avg.
50%
min
50%
min
0.1
NMOG
fleet
avg.
85%
min
85%
min
Notes:
a   Tier 2 requirements begin with a=MY2004+. Tier 3 requirements begin with
    MY2017+
b   Small volume manufacturer exempt until last year of phase-in.
c   Light-duty vehicle (LDV) may be combined with light-duty truck 1 (LDT1) and
    LDT2 for Tier 1 phase-in.
d   LDV and LDT1 combined with LDT2 for Supplemental Federal Test Procedure
    phase-in.
e   Other equivalent schedules allowed.
f   Fleet average derived from 50,000 mile standards.
g   Not applicable to small volume manufacturers.
h   Early credits available.
Code of Federal Regulations (CFR) citations:
•    40CFR86SubpartA
    40 CFR 86 Subpart R - NLEV program

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