This project introduces a smart air filter monitoring system for vehicle cabins and engines, leveraging airflow sensor technology to ensure optimal filter performance. The system continuously measures airflow through the filter, detecting blockages or reduced efficiency caused by dirt accumulation. Sensor data is processed by a Bluetoothenabled microcontroller, sending real-time updates to a dashboard LED and a mobile application. Drivers receive timely notifications for filter replacement, helping maintain vehicle efficiency and passenger health. Additionally, a fleet management dashboard aggregates airflow data from multiple vehicles, assisting fleet operators in proactive maintenance scheduling. By predicting filter replacements and minimizing vehicle downtime, the platform enhances fleet productivity and reduces operational costs. This integrated system offers a scalable, cost-effective solution, promoting sustainability through optimized filter usage and improved air quality in vehicles.