In today’s modern and digital world, if the fuel indicator in the vehicles is made digital, it will help us to know the exact amount of fuel available/filled in the tank. It can also help in knowing if the fuel dispensed is adulterated or not. The above fact is considered in our project. The exact amount of fuel available as well as presence of adulterant in the tank will be displayed digitally by making the use of Ultrasonic sensor. The ultrasonic sensor is a non-contact sensor, with low power requirement and good accuracy. It overcomes the problems faced by other gauges and is suitable for the non-contact measurement of the fuel inside the tank. The device measures quantity and quality dispersed using simple ultrasonic waves. Hence, this device when installed prevents the customer from getting cheated.