oEPA
United States
Environmental Protection
Agency
Office of Transportation and Air Quality
EPA-420-B-16-014
March 2016
Light-Duty Vehicles, Light-Duty Trucks, and Medium-Duty Passenger Vehicles:
Tier 2 Evaporative Emission Standards
Federal
Vehicle Type
LDV/LLDTs a
HLDTs b
MDPVs a> b
LDVa
LLDTa
HLDTb
MDPVa'b
Model Year
2004
2004
2004
2009
2009
2010
2010
3 Day Diurnal + Hot Soak
(g/test)
0.95
1.20
1.40
0.50
0.65
0.90
1.00
Supplemental
2 Day Diurnal + Hot Soak
(g/test)
1.20
1.50
1.75
0.65
0.85
1.15
1.25
Running Loss
(g/mi)
0.05
0.05
0.05
0.05
0.05
0.05
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 (LOT), and medium-duty passen-
ger 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:
• 40 CFR 86 Subpart S
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