The performance of battery electric vehicles (BEVs) is significantly affected by ambient temperature, especially in areas with substantial seasonal fluctuations. This thesis examines the influence of Uzbekistan’s continental climate on electric vehicle range, battery deterioration, and operational expenses through the creation of a validated MATLAB/Simulink-based electro-thermal vehicle model. We chose three representative BEVs to study: the Nissan Leaf (24 kWh), the Chevrolet Bolt EV (60 kWh), and the 2017 Volkswagen e-Golf (35.8 kWh, DC fast-charging version). The modeling framework combines longitudinal vehicle dynamics, battery behavior that changes with temperature, HVAC auxiliary loads, and range data that has been tested in controlled laboratory campaigns.