This paper delves into the analysis and simulation of electric and hybrid electric vehicle powertrains using ADVISOR software. Focused on Iran's energy consumption, it evaluates the suitability of HEV vehicles and assesses the carbon footprint of energy sources to identify the most efficient option. Detailed simulations of powertrain components like electric motors and batteries are conducted to measure efficiency and environmental impact. Comparison with other powertrains is done using Simulink and ADVISOR, examining energy usage, fuel economy, and emissions.