For example:

If you add 100 yuan of gasoline, run 100 kilometers, and if there is no vehicle, there is 1 yuan per kilometer. A liter of gasoline, 6 yuan. That's 100 yuan divided by 6 yuan. That is to say, if you add about 16L of gasoline, your vehicle's fuel consumption per 100 kilometers is 16L. One yuan per kilometer.

This is the most accurate and simple method to calculate fuel consumption.

But now many cars have fuel consumption indicators of 100 kilometers, but this is calculated by the computer, and there will be some errors, so if you want to know the fuel consumption of gasoline accurately, you can calculate it yourself.