LPG used in motor vehicles is called Auto LPG (or known by comman name as ‘Autogas’).

Auto LPG is a clean, high octane, abundant and eco-friendly fuel. It is a mixture of petroleum gases like propane and butane. It is obtained from natural gas through fractionation and from crude oil through refining. Auto LPG is widely used as a "green" fuel, as its use reduces CO₂ exhaust emissions by around 15% compared to petrol. Its advantage is that it is non-toxic, non-corrosive and free of tetraethyllead or any additives, and has a high octane rating. It burns more cleanly than petrol or fuel-oil and is especially free of the particulates present in the latter.

In normal conditions, LPG is a gaseous material but it is often stored under pressure that turns it into a liquid. This makes it very easy to transport, one of the many advantages of LPG over other energy sources. Hence LPG can be easily condensed, packaged, stored and utilized as as a petrol alternative to fuel internal combustion engines.

The use of LPG as an automotive fuel has become legal in India with effect from April 24, 2000 and its use is governed by the provisions of The Liquefied Petroleum Gas (Regulation of Use in Motor Vehicles) Order, 2001.

Auto LPG is marketed by IndianOil under the brand name 'AutoGas'. It has setup 350 Auto LPG Dispensing Stations (ALDS) covering 192 cities across India. Auto LPG is marketed by Hindustan Petroleum Corporation under the brand name 'autoLPG'. Bharat Petroleum launched LPG for Cars as a pilot project in Delhi, where vehicles ran on LPG for the first time in India. A strong network of Auto LPG Dispensing Stations (ALDS) has now been developed across various cities in the country.