Systems, methods, devices, and models determining fuel level in vehicles are described. Fuel tank capacity often extends beyond what can be measured by a fuel level sensor. Herein, fuel level data is augmented with fuel consumption data or fuel consumption rate to estimate a fuel level in a fuel tank when a fuel level sensor reads 100%. Fuel consumed until the fuel level sensor reads less than 100% can be added to measurable capacity of the tank to determine an initial volume of fuel in the tank.