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Alternative and Advanced Vehicles

Natural Gas Vehicles

Compressed natural gas (CNG) and liquefied natural gas (LNG) are considered alternative fuels under the Energy Policy Act of 1992. Natural gas vehicles (NGVs) are either fueled exclusively with CNG or LNG (dedicated NGVs) or are capable of natural gas and gasoline fueling (bi-fuel NGVs).

This page serves as a table of contents for the Natural Gas Vehicles section. To learn about these alternative fuel vehicles, choose from the links below. Some of the following documents are available as Adobe Acrobat PDFs. Download Adobe Reader.

What is a Natural Gas Vehicle? 

Learn about natural gas vehicles and how they work.

Vehicle Availability 

Learn about available natural gas vehicles and find vehicle specifications and costs.


Learn about the emissions impacts of driving a natural gas vehicle.

Cost Calculator 

Use this calculator to evaluate the costs of driving a natural gas vehicle.

Select Natural Gas Vehicle Publications

  • Natural Gas Transit Users Group: Assisting Transit Agencies with Natural Gas Bus Technologies (PDF 374 KB)
  • Bold Policies Make Washington, D.C. an Alternative Fuel Leader (PDF 250 KB)
  • Norcal Prototype LNG Truck Fleet: Final Results (PDF 1.7 MB)