CNG generally creates fewer smog-related tailpipe emissions than gasoline, and can reduce tailpipe GHGs by about 20%. There are also GHG emissions associated with extracting, processing, and distributing CNG. Learn more about GHG emissions.
CNG is more cost-effective than gasoline and diesel because it will save you money on vehicle maintenance. CNG doesn't contain lead, doesn't dilute or contaminate oil, and doesn't react to other metals, which will help to prolong the life of your engines.