- LPG, or liquefied petroleum gas, is a natural fuel made of propane and butane that can be stored in high quantities in small tanks, making it an affordable alternative to petrol for vehicles. - Most petrol vehicles can be converted to run on LPG, which is cheaper than petrol and produces fewer emissions. The LPG tank is installed in the spare tire area or boot. - LPG systems are very safe, with safety features like automatic shut-off, and tanks are rigorously tested to withstand high pressures and temperatures. With over 4 million LPG vehicles worldwide, it has a strong safety record.