We recently purchased an 08 Prius. We have the choice of 2 routes to take to a destination and would like to know which one uses less fuel. Our Volvo was able to let us know how many gallons of fuel it took to drive a certain distance but I cannot find a way to calculate it on the Prius. I assume there is a counter for the fuel since there is an mileage averaging indicator. Does anyone know if there is a way to access the output of the fuel counter, the output could just be a pulse count since all I need is a relative number for fuel consumption?