The Honda Unicorn 160 has an official fuel tank capacity of approximately 12 liters. However, it's worth noting that the fuel gauge or console display may not always accurately reflect the precise amount of fuel in the tank.
When filling up the fuel tank, it is common for some fuel to remain in the tank even after the gauge reaches the maximum level. This can occur due to variances in the fuel tank design and the fuel level sensor's accuracy. Additionally, the display on the console might not always be perfectly calibrated.
If you had some fuel remaining in the tank before refueling, it is possible that the console showed 14 liters due to the combination of the remaining fuel and the newly added fuel. This does not necessarily indicate that you were scammed or that the actual capacity is more than what Honda officially mentions.
To get a more accurate understanding of your motorcycle's fuel capacity, you can refer to the owner's manual or consult with an authorized Honda service center. They will be able to provide specific information regarding the fuel tank capacity and how the fuel gauge system works for your particular model.