Welcome to World CNG
World CNG is a nationally-recognized alternative fuel vehicle company dedicated to the development, fabrication, and installation of alternative fuel technology. World CNG specializes in the conversion of passenger and cargo vehicles to use compressed natural gas (CNG) and caters to a variety of public and private fleets and transit and paratransit operators. With a technical and sales staff that includes some of the industry’s leading experts in CNG vehicle technology, World CNG is uniquely qualified to work with fleet managers from across the country to develop customized vehicle procurement and financing solutions that seamlessly integrate with any fleet.
To meet the growing demand for CNG vehicles and services from across the United States, the company in 2011 expanded its operations beyond its Seattle headquarters with wholly-owned subsidiaries and authorized installers around the country.
Why Alternative Fuels?
Based on current market conditions, CNG delivers considerable fuel savings of around 50%, when compared to conventional diesel or gasoline.
For example, assuming a price difference between gasoline and CNG of $1.90 per gallon, a Chevolet Impala taxi running on CNG at 25 MPG and traveling 100,000 miles per year saves over $7000 in fuel in just one year, compared to the same vehicle using conventional gasoline.
When compared to less fuel efficient gasoline vehicles such as shuttle buses and passenger vans, these savings are even greater. A typical shuttle bus operating on CNG instead of conventional gasoline or diesel stands to save upwards of $10,000 per year (assuming 10 MPG and 50,000 miles traveled per year).
Moreover, natural gas prices are projected to increase at a much slower rate over the the next 25 years than are petroleum prices. This means the cost advantage of choosing CNG will only grow.
Light-Duty Vehicle Emissions: CNG vs. Gasoline
The U.S. Environmental Protection Agency calculated the potential benefits of CNG versus gasoline, based on the inherently cleaner-burning characteristics of natural gas. It was determined that CNG vehicles:
- Reduce carbon monoxide emissions by 90% – 97%
- Reduce carbon dioxide emissions by 25%
- Reduce nitrogen oxide emissions by 35% – 60%
- Potentially reduce non-methane hydrocarbon emissions by 50% – 75%
- Emits fewer toxic and carcinogenic pollutants
- Emit little or no particulate matter
- Eliminate evaporative emissions
While stricter environmental regulations have forced automakers to continuously work to improve the emissions performance of gasoline vehicles, CNG vehicles have consistently kept their emissions performance well ahead of government standards. Results from tests comparing the emissions of light-duty CNG vehicles and light-duty gasoline vehicles can be found at the Vehicle Technologies Emissions Testing page.
For more in-depth analyses of natural gas vehicle emissions versus conventional fuel emissions, please see the AFDC Natural Gas Emissions page.
WASHINGTON STATE TAX EXEMPTIONS
Available To:
Any person.
Qualifying Activity:
Purchase or lease of a new passenger car, light duty truck, and medium duty passenger vehicle that is powered exclusively by clean alternative fuels between January 1, 2009, and July 1, 2015.
Purchase or lease of a new passenger car, light duty truck, and medium duty passenger vehicle that is powered exclusively by a high gas mileage hybrid between January 1, 2009, and July 31, 2009.
Qualifying hybrids remain exempt from the additional 0.3% motor vehicle sales/use tax through December 31, 2010.
Reporting/Documentation Requirements:
- No application
- No Annual Survey/Report
- Electronic filing not required
- Dealer must keep records to substantiate the exemption
Clean alternative fuel exemption expires July 1, 2015. Please refer to the Washington State Legislature for more information.

