The 'Thuê xe Vân Hải' Chrome extension is a free tool designed for vehicle management, particularly useful for those who rent cars. It offers essential features such as fuel cost estimation, maintenance reminders, and fuel consumption tracking. Users can easily calculate fuel expenses based on distance, fuel price, and vehicle consumption rates, allowing for better travel budgeting.

Additionally, the extension provides a maintenance reminder system that helps users schedule regular vehicle upkeep, including oil changes and tire checks. The reminders are stored in the browser's memory and automatically alert users when maintenance is due. The fuel consumption log enables users to monitor their fuel usage over time, ensuring efficient vehicle performance. Overall, 'Thuê xe Vân Hải' enhances the car rental experience with its practical management tools.