Driving under the influence of alcohol has affected and killed countless of people lives. If you are drunk while driving, not only you are putting yourself at risk but also the passengers travelling with you and the others on the road are in danger. So, we have tried to projected an Automatic Engine lock system on behalf of talking responsibility to control driving safely as much as we can. The alcohol detection system works on a simple principle. If a driver has been drinking, the alcohol sensor will sense by playing a Buzzer. With the use of GPS, we will be able to trace the location of the vehicle and a message will be send to the registered number by using GSM module. The main work is done by MQ3 alcohol detecting sensor and the programmable brain Arduino Uno. If the sensor sensed the particular value of alcohol present in the air from a nominal distance then the sensor throw high signal in digitally and the buzzer has been blown. As this way we can identify the driver is alcoholic or not by this project and Thus, the motor driver will be stopped immediately.