The passenger cars run by petrol are mostly used for transportation in India. The increases in fuel demand as the vehicles increases, high fuel cost due to price fixation daily and pollute the environment with their combustion products, engineers concern have to look an alternate fuel for petrol in Spark Ignition (SI) engine. Alternative fuels such as LPG (Liquefied Petroleum Gas), CNG (Compressed Natural Gas) are used in SI engines are current development. The use of biogas is also a better exchange for LPG and CNG fuel. Because biogas is easily producible, has a high octane number, lower emission level, wider flammability range, lower cost per energy unit of biogas, high self-ignition temperature and it also resists knocking, which is desirable in SI engines. Limited authors have attempted to use biogas as a substitute fuel for petrol in SI engine and dual fuel in Compression Ignition (CI) engine on their experimental studies. This paper reviews those studies and gives an observation for researcher’s to make use of biogas as an alternative fuel for spark-ignition engines efficiently.