Transportation and Climate

Regulations & Standards: Federal Fleets

Low GHG-Emitting Vehicles

Section 141 of the 2007 Energy Independence and Security Act (EISA) requires federal agencies to acquire low greenhouse gas (GHG) emitting vehicles.

Each model year (MY), EPA evaluates the GHG emissions performance of the light-duty (LD) fleet to determine the maximum allowable GHG emissions level to be designated a low GHG-emitting vehicle.

Definition of a Low GHG-Emitting Vehicle

EISA 141 compliance levels are based on specific CO2 gram/mile maximum emissions levels. The CO2 emissions level threshold for any given model year will be determined by estimating the level needed to designate approximately 25% of cars and 25% of LD trucks and medium-duty passenger vehicles (MDPVs) as EISA 141 compliant.

MY 2013

MY 2013 EISA 141 Compliance Thresholds (maximum grams/mile CO2 emissions)
Passenger Cars	330 g/mile
Light-Duty Trucks, MDPVs	415 g/mile
FFV Passenger Cars*	375 g/mile on E85
FFV Light-Duty Trucks*	460 g/mile on E85

*If operated on E85. Read EISA Sect. 141 Guidance (PDF) (28 pp, 1.3MB, EPA-420-B-12-027, June 2012) for more information on how flexible fuel vehicles (FFVs) may qualify as low GHG-emitting under this program.

MY 2012 and Earlier

In the first phase of the program (PDF) (30 pp, 700K, EPA-420-B-10-008, February 2010) , EISA 141 compliance was based on GHG scores available on EPA’s Green Vehicle Guide.

Search for Low GHG-Emitting Vehicles

Find a passenger car, truck, or FFV* for model year 2013 vehicles (PDF) (13 pp, 568K, EPA-420-B-12-047a, September 2012)

Find eligible vehicles for model year 2012 and earlier at EPA’s Green Vehicle Guide.

* FFVs are listed separately under vehicle type, as some FFVs only qualify when operated with E-85. These vehicles must be operated with E-85 in order to qualify as low GHG-emitting.