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Emission Standards Reference Guide

Light-Duty Vehicle and Light-Duty Truck -- Tier 1 and National Low Emission Vehicle Supplemental Federal Test Procedure Exhaust Emission Standards

Vehicle Type Emission Category 4,000 Miles 5 Years / 50,000 Miles 10 Years / 100,000 Miles
US06 Test A/C Test Composite A/C Test US06 Composite Composite A/C Test US06 Composite
NMHC
+NOx (g/mi)
CO (g/mi) NMHC
+NOx (g/mi)
CO (g/mi) NMHC
+NOx (g/mi)
CO (g/mi) CO (g/mi) CO
(g/mi)
NMHC
+NOx (g/mi)
CO (g/mi) CO (g/mi) CO
(g/mi)
Federal LDV Tier 1b - - - - 0.65c 3 9 3.4 0.91d 3.7 11.1 4.2
LDT1 Tier 1b - - - - 0.65c 3 9 3.4 0.91d 3.7 11.1 4.2
LDT2 Tier 1e - - - - 1.02 3.9 11.6 4.4 1.37 4.9 14.6 5.5
LDT3 Tier 1e - - - - 1.02 3.9 11.6 4.4 1.44f 5.6f 16.9f 6.4f
LDT4 Tier 1e - - - - 1.49 4.4 13.2 5 2.09f 6.4f 19.3f 7.3f
Federal (NLEV) LDV/PC Tier 1 / TLEVb - - - - 0.65c 3.0g 9 3.4 0.91d 3.7g 11.1 4.2
LEV / ULEVb 0.14 8 0.2 2.7 - - - - - - - -
LDT1 Tier 1 / TLEVb - - - - 0.65c 3.0g 9 3.4 0.91d 3.7g 11.1 4.2
LEV / ULEVb 0.14 8 0.2 2.7 - - - - - - - -
LDT2 Tier 1 / TLEVe - - - - 1.02 3.9 11.6 4.4 1.37 4.9 14.6 5.5
LEV / ULEVb 0.25 10.5 0.27 3.5 - - - - - - - -

 

Notes:

a  Manufacturers must calculate their applicable full useful life SFTP standards for non-methane hydrocarbon plus nitrogen oxides, particulate matter, and for carbon monoxide (CO), if using the weighted CO standard. If not using the weighted CO standard, manufacturers may use the full useful life stand-alone Tier 1 standards for US06 and SC03.

b  Gasoline and diesel vehicles only.

c  1.48 for diesel-fueled vehicles.

d   2.07 for diesel-fueled vehicles.

e  Gasoline vehicles only.

f  Standards apply at a useful life of 11 years or 120,000 miles.

g  Does not apply to diesel-fueled vehicles.

Code of Federal Regulations (CFR) Citations:

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