In this paper, we are going to use the Pearson and Spearman methodologies for the real-time application of finding the fuel efficiency in 4 wheelers. The Pearson and Spearman methodologies are the correlation methodologies used mainly in the Software development process to identify the complexity between the various modules of the software. Identifying the complexity is important because if the complexity is higher then there is a higher chance of occurrence of the risk in the software. Hence we choose the Pearson and Spearman methods to analyze the fuel consumption of 4 wheelers between the City and Highway. © 2017 IEEE.