This document describes a vehicle theft detection system that uses various sensors integrated with a microcontroller and communication modules. The system uses an alcohol sensor to detect alcohol, a smoke sensor to detect smoke, and an emergency button. It sends alerts to a Blynk app and via SMS messages using an ESP8266 WiFi module and GPS and GSM modules. The microcontroller analyzes sensor data and controls alerts and ignition. The system was designed and tested to provide vehicle tracking, pollution monitoring, and safety features. Future extensions could include automatic emergency braking and drowsiness detection.