Compressed natural gas
CNG, fuel which can be used in place of gasoline, diesel fuel and propane/LPG
Compressed natural gas (CNG) is fuel gas composed primarily of methane (CH4), compressed to less than 1% of its volume at standard atmospheric pressure. It is stored in high-pressure containers at approximately 20–25 megapascals (2,900–3,600 psi; 200–250 bar), typically in cylindrical or spherical shapes.
CNG is used in modified petrol and internal combustion engine vehicles as well as purpose-built CNG vehicles. These include dedicated CNG systems, dual-fuel vehicles that combine CNG with liquid fuel, and bi-fuel vehicles. It can serve as an alternative to petrol, diesel fuel, and liquefied petroleum gas (LPG). Compared with these fuels, CNG combustion produces lower emissions of several pollutants. Because natural gas is lighter than air, it disperses more readily when released. Biomethane derived from anaerobic digestion or landfill sources can also be used.
CNG has been used in applications including auto rickshaws, pickup trucks, transit and school buses, and trains. Municipal fleets and public transport operators have often adopted the fuel for cost and infrastructure reasons.
This brief starts where responsible research should: with the source description of “Compressed natural gas” as cNG, fuel which can be used in place of gasoline, diesel fuel and propane/LPG. Everything that follows is an evidence route, not borrowed authority.
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The subject matters to the general reference register because the source frames it as cNG, fuel which can be used in place of gasoline, diesel fuel and propane/LPG. Its deeper value depends on whether names, dates, institutions and citations support that framing.
Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Sep 19, 2026. The linked authority identifier is Q720050. None of the 0 selected statements returned an explicit reference.
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This entry incorporates text from “Compressed natural gas” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.