This paper presents an IoT-based system using Blynk that enables remote monitoring of a car engine’s condition. The system integrates pressure sensors to monitor oil and gas pressure, temperature sensors to track engine temperature, and vibration sensors to detect unusual engine activity. At the heart of the system is the NodeMCU microcontroller, which processes all the sensor data and communicates it to the Blynk cloud platform in real time. The NodeMCU also controls a ventilation fan that helps regulate the engine’s temperature, enhancing both performance and longevity. This smart system ensures that critical engine information is accessible from anywhere via the Blynk app, making it easier to identify and respond to potential issues before they become serious. By combining intelligent control, accurate sensors, and IoT connectivity, the system offers a reliable solution for remote engine health monitoring— ultimately helping users maintain their vehicles more effectively and ensuring smoother performance.