LPG is an abbreviation for 'Liquified Petroleum Gas'. Also know as Gas or Autogas it is a by - product of the refinement of crude oil. LPG is also produced when Natural Gas (Methane) is extracted from the gas fields and 'dried' before being piped to homes and industry.

There are over 9 million LPG vehicles worldwide and 117,000 on the road in the UK. Although larger commercial vehicles typically run on LPG alone, the vast majority of cars and vans using LPG are bi-fuel vehicles which can also use petrol.