2. Select the "Fuel" tab

3. Select the fraction of the tank to use for the rest of the configuration. If you choose 4, you will be able to choose 1/4, 2/4 and so on.

4. Also select the capacity unit

5. Then, you can adjust the price for each type of fuel

6. Then, go to Cars - Models

7. Select a brand

8. Select a model

9. Click on "Edit"

10. Select fuel type and tank size for this particular model