In this paper, fuel consumption for a TOYOTA ECHO PLUS-2ZZ-GE-02 model light vehicle has been analyzed by changing the front right toe-out angles. Acomputerized wheel alignment machine (Best-5800) has been used to measure the misalignment of the wheels. Fuel consumptions were measured for different front right toe-out angles adjusted by the machine while the car travel is 6 km. It was found that due to misalignment of front right toe-out angle (from 0.00° to -2.53°), the fuel consumption rate is increased upto 41.21%. The pearson’s correlation coefficient was found as r(αF)abs.=0.99, which proves a very strong correlation between fuel consumption and front right toe-out angle. It has been also analyzed the retation between front right toe-out angle and fuel consumption of vehicle using by experimental method to predict the fuel consumption. The mathematical model proposed in this study can also used to predict the amount of fuel consumption by the different model of vehicles.