This study simulates a backward facing mathematical model of vehicle in Malaysia (Perodua Myvi) with the presence of torque converter model and the simulations is running on different condition. The conditions are normal driving; start and stop; early down shift; early up shift; late down shift and late up shift. Normal driving and start and stop condition for fuel consumption results from the simulation are compared to the experimental fuel consumption of the same vehicle run on the same drive cycle, to verify the mathematical model for Perodua Myvi that was simulated by using Matlab. The drive cycles data are gathered twice at different times of the day based on city roads and high way in the state of Penang and Kedah, Malaysia. T...