United States
Environmental Protectioi
\F ^1 #* Agency
Light-Duty Vehicles, Light-Duty Trucks, and Medium-Duty Passenger Vehicles:
Tier 2 Exhaust Emission Standards and Implementation Schedule

Standard
Emission Limits at 50,000 miles
Emission Limits at Full Useful Life
(120,000 miles)a

NOx
(g/mi)
NMOG
(g/mi)
CO
(g/mi)
PM
(g/mi)
HCHO
(g/mi)
NOx
(g/mi)
NMOG
(g/mi)
CO
(g/mi)
PM
(g/mi)
HCHO
(g/mi)

Bin 1
-
-
-
-
-
0
0
0
0
0

Bin 2
-
-
-
-
-
0.02
0.01
2.1
0.01
0.004

Bin 3
-
-
-
-
-
0.03
0.055
2.1
0.01
0.011

Bin 4
-
-
-
-
-
0.04
0.07
2.1
0.01
0.011

Bin 5
0.05
0.075
3.4
-
0.015
0.07
0.09
4.2
0.01
0.018

Bin 6
0.08
0.075
3.4
-
0.015
0.1
0.09
4.2
0.01
0.018
Federal
Bin 7
0.11
0.075
3.4
-
0.015
0.15
0.09
4.2
0.02
0.018

Bin 8
0.14
0.100/
0.125 c
3.4
-
0.015
0.2
0.125/
0.156
4.2
0.02
0.018

Bin 9 b
0.2
0.075/
0.140
3.4
-
0.015
0.3
0.090/
0.180
4.2
0.06
0.018

Bin 10 b
0.4
0.125/
0.160
3.4/4.4
-
0.015/
0.018
0.6
0.156/
0.230
4.2/6.4
0.08
0.018/
0.027

Bin 11 b
0.6
0.195
5
-
0.022
0.9
0.28
7.3
0.12
0.032
Notes:
Tests Covered: Federal Test Procedure (FTP), cold carbon
monoxide (CO), highway, and idle
Model Year: 2004
a In lieu of intermediate useful life standards (50,000 miles)
or to gain additional nitrogen oxides credit, manufactur-
ers may optionally certify to the Tier 2 exhaust emission
standards with a useful life of 150,000 miles.
Implementation Schedule

Vehicle Category
NOx avg. / cap (g/mi)a
Model Year
2004
2005
2006
2007
2008
2009
2010
Federal
LDV, LLDT
0.3/-
75%
50%
25%
0%
-
-
-
0.07/-
25%
50%
75%
0%
-
-
-
0.07/0.2
-
-
-
100%
100%
100%
100%
HLDT, MDPV
- / 0.6
75%
50%
25%
0%
-
-
-
0.02/-
25%
50%
75%
100%
50%
0%
-
0.07/-
-
-
-
-
50%
0%
-
0.07/0.2
-
-
-
-
-
100%
100%
Office of Transportation and Air Quality
EPA-420-B-17-028
September 2017
b Bins 9-11 expire in 2006 for light-duty vehicles and light
light-duty trucks and 2008 for heavy light-duty trucks and
medium-duty passenger vehicles.
c Pollutants with two numbers have a separate certification
standard (1st number) and in-use standard (2nd number).
Notes:
a At full useful life (120,000 miles).
Code of Federal Regulations (CFR) citations:
40 CFR 86 Subpart S

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