Abstract: - This effort focuses on keeping autos safe from unwanted usage and preventing theft. Only approved individuals can start the vehicle using a biometric fingerprint security system. This protects the car. The use of security systems is expanding and is becoming increasingly required around the world. Biometrics such as fingerprints are commonly employed in factories, buildings, and schools. Thisproject is concerned with vehicle security, which leads to the development of an anti-theft system in a car using the ATmega328. To detect the fingerprint, an inside-the-vehicle fingerprint sensor is used. The fingerprint sensor data reading obtained in the ATmega328 is analyzedusing the pre-assigned data. The engine ignition system starts after recognizing the person as the car owner or an authorized fingerprint user who can take control of the car. If an intruder is present, the engine will not start. Other security systems can be hacked, whereas in this case, a fingerprint is used as the key, which is unique to each individual and thus provides improved security. We also used an RFID sensor for the car's ignition. If the fingerprint sensor fails, the RFID tag can be used to start the car by simply scanning it. In the event that the fingerprint sensor fails, this code will be stored in the RFID tag he/she is carrying.Keywords: - Ignition system, Fingerprint, RFID, Vehicle.