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Emission Standards Reference Guide

Light-Duty Vehicle and Light-Duty Truck -- Clean Fuel Fleet Exhaust Emission Standardsa

Vehicle Type Emissions Category Useful Life Standard Test Weight (lbs) NMOG (g/mi) NOx (g/mi) CO (g/mi) Formaldehyde (g/mi) PM (g/mi)b
Federal LDVs TLEV Intermediate All 0.125 0.4 3.4 0.015 -
LEV 0.075c 0.2 3.4c 0.015c -
ULEV 0.040 0.2c 1.7 0.008 -
TLEV Full 0.156 0.6 4.2 0.018 0.08
LEV 0.090c 0.3 4.2c 0.018 0.08c
ULEV 0.055 0.3c 2.1 0.011 0.04
LLDTs TLEV Intermediate 0-3750 LVW 0.0125 0.4 3.4 0.015 -
LEV 0.075c 0.2 3.4c 0.015c -
ULEV 0.040 0.2c 1.7 0.008 -
TLEV 3751-5750 LVW 0.160 0.7 4.4 0.018c -
LEV 0.100c 0.4 4.4c 0.018c -
ULEV 0.050 0.4c 2.2 0.009 -
TLEV Full 0-3750 LVW 0.156 0.6 4.2 0.018 0.08
LEV 0.090c 0.3 4.2c 0.018c 0.08c
ULEV 0.055 0.3c 2.1 0.011 0.04
TLEV 3751-5750 LVW 0.200 0.9 5.5 0.023 0.08
LEV 0.130c 0.5 5.5c 0.023c 0.08c
ULEV 0.070 0.5c 2.8 0.013 0.04
HLDTs LEV Intermediate 0-3750 LVW 0.125c 0.4d 3.4c 0.015c -
ULEV ALVW 0.075 0.2c, d 1.7 0.008 -
LEV 3751-5750 0.160c 0.7d 4.4c 0.018c -
ULEV ALVW 0.100 0.4c, d 2.2 0.009 -
LEV 5751+ 0.195c 1.1d 5.0c 0.022c -
ULEV ALVW 0.117 0.6c, d 2.5 0.011 -
LEV Full 0-3750 LVW 0.180c 0.6 5.0c 0.022c 0.08c
ULEV ALVW 0.107 0.3c 2.5 0.012 0.04
LEV 3751-5750 0.230c 1.0 6.4c 0.027c 0.10c
ULEV ALVW 0.143 0.5c 3.2 0.013 0.05
LEV 5751+ 0.280c 1.5 7.3c 0.032c 0.12c
ULEV ALVW 0.167 0.8c 3.7 0.016 0.06

 

Notes:

a  These standards have in effect been superseded by newer, more stringent standards in 40 Code of Federal Regulations (CFR) Part 86.  See EPA manufacturer guidance letter on Clean-Fuel Vehicle Standards (PDF) (6 pp, 109K, CCD-05-12, July 21, 2005, About PDF) which provides guidance on deternining the equivalency of vehicle and engine emission standards in the CFR Part 86 standards and Part 88 standards for Clean-Fuel Vehicles.

b  Applies to diesel vehicles only.

c  Applies to Inherently Low Emission Vehicles.

d  Does not apply to diesel vehicles.

Code of Federal Regulations (CFR) citations:
  • 40 CFR 88.104-94 = Clean-fuel vehicle tailpipe emission standards for light-duty vehicles and light-duty trucks
  • 40 CFR 88.311- 93 § 88.311- 98 = Emission standards for Inherently Low-Emission Vehicles

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