Emission Standards Reference Guide
Light-Duty Vehicle, Light-Duty Truck, and Medium-Duty Passenger Vehicle -- Tier 2 Evaporative Emission Standards
| Vehicle Type | Model Year | 3 day Diurnal + Hot Soak (g/test) |
Supplemental 2 day Diurnal + Hot Soak (g/test) |
Running Loss (g/mi) |
|
|---|---|---|---|---|---|
| Federal | LDV/LLDTsa | 2004 | 0.95 | 1.20 | 0.05 |
| HLDTsb | 2004 | 1.20 | 1.50 | 0.05 | |
| MDPVsa, b | 2004 | 1.40 | 1.75 | 0.05 | |
| LDVa | 2009 | 0.50 | 0.65 | 0.05 | |
| LLDTa | 2009 | 0.65 | 0.85 | 0.05 | |
| HLDTb | 2010 | 0.90 | 1.15 | 0.05 | |
| MDPVa, b | 2010 | 1.00 | 1.25 | 0.05 |
Notes:
Multi-fuel vehicle phase-in applies.
In-use phase-in applies.
a For liquefied petroleum gas-fueled light-duty vehicles (LDV), light-duty trucks (LDT), and medium-duty passenger vehicles (MDPV): 0.15 grams hydrocarbon per gallon (0.04 grams per liter) of fuel dispensed.
b Refueling standards for heavy light-duty trucks (HLDT) are subject to phase-in requirements. MDPVs must also comply with the phase-in requirement and must be grouped with HLDTs to determine phase-in compliance.
Code of Federal Regulations (CFR) Citations: