Internal combustion reciprocating engines are vital in sustainability and ease of work in human life. They became the major role player in industries, power generation and agriculture, transportation (land, water and air). The major objective of this research study is to analysis the performance of S.I. Engine fueled by conventional fuels and fueled by renewable fuels (alcohols) and to find the economic feasibility and validation of the results. It will involve development and test performance on experimental results with Validation of experimental data.