What is diffrent between CNG AND LPG

1. CNG or Compressed Natural Gas is mainly composed of Methane while LPG or Liquefied Petroleum Gas is mainly composed of propane, butane and other gasses.
2. CNG is mainly Methane at a very high pressure while LPG is Propane, Butane and other gasses.
3. CNG remains in gas form even at higher pressure while LPG liquefies.
4. While LPG is usually a bi product of the drilling or the refining process, the CNG is extracted as it is and supplied with minimum of processing.
5. CNG is a much cleaner fuel and very popular abroad while in the US LPG is quite popular