Can calculate the fuel consumption rate by yourself as follows: 1. Fill the tank with full oil 2. Set the car mileage to 0 or remember the mileage that starts with how much 3. Use the car normally. and observe the mileage of the car used (Recommended to use more than 100 km or more) 4. Stop by to refuel again. by filling the tank as before (Same brand oil, same type, just fill the cutting nozzle) and take note of the amount of oil added. And the amount paid. 5. Record all the distances used. Calculation methods 1. Bring the total amount of distance used. Dividing by the amount of fuel filled the 2nd time, for example, the total distance of 500 km. Refueling the 2nd time to 30 liters = 500/30 = 16.6 km/liter, it will get the number of how many km/liter of fuel our car consumes * This formula works for all types of vehicles.