Not a gas guzzler - LPG can offer huge savings over petrol and diesel Benefits of LPG Fuel Price The forecourt price of LPG is typically around 45%-50% less than that of petrol and diesel. Latest AA fuel price report (Nov 2014) found petrol average at 121.3p per litre; diesel at 125.2p per litre; LPG at 64.9p per [...]