1. INTRODUCTION Based on the Collins English Dictionary (2003), petrol is defined as any of various flammable volatile liquid mixtures of hydrocarbons, principally hexane, heptane and octane, obtained from petroleum and used as a solvent and fuel for internal combustion engines. Currently, petrol becomes a necessity for everyone, especially for transport users. Caless, Capel, and Leonard (2011) stated that in the late 19th century, a London chemical company used “petrol” as their product name. According to Birkett, A (2011), hydrocarbons include in gasoline which contains carbon atoms and hydrogen atoms. Both play an important role as a fuel because carbon dioxide is a combination of one carbon atom and two oxygen atoms and water (H20) is a combination of two hydrogen with oxygen. Gasoline or the other name of gasoline has the characteristic of being a transparent liquid derived from petroleum used mainly as a fuel in internal combustion engines, as stated in WordNet (r) 3.0 (2006). Petroleum contains organic compounds with numerous additives obtained from the fractional distillation of petroleum. In North America, gasoline was simply referred to as gas in everyday life. Some countries like United Kingdom, Republic of Ireland, India and Australia and most other Commonwealth countries call petrol by a common name. Nowadays, many petrol pumps are supplied in Malaysia under a variety of brands such as PETRONAS, Shell, Caltex, Esso, BHP and others according to Sung, CT (2011). This could result in gasoline producers having to compete with other gasoline producers to position themselves in the market in line with changing economic life. Based on Kosmo! Online News, Irwan Asri Mohd Nor said that every oil company...... middle of paper...... may have some similarities with the car other than the distance traveled and the type of engine. Gas station pump calibrations have a significant effect on fuel consumption calculations. Every motorcycle has different fuel consumption for the same brand of fuel. It is not possible to prove that one brand of gasoline is better or worse than other brands because there is not enough evidence that it is possible that there is no difference between brands of gasoline in terms of fuel consumption." Pumping slowly gives you a lot of gasoline .Pumping with speed, get some,” said Muslim Consumers Association of Malaysia (PPIM) Project Manager Noor Nirwandy Mat Noordin. The amount of petrol is slightly different although the digital display shows that the petrol pumped is one liter due to the entry of air. To prevent air from entering the fuel tank, it is best to fill the gasoline slowly.