There are all sorts of iOS apps that keep track of gas mileage which in normal use will show hyper-inflated values for a Plugin Prius. This is because they will track gallons of gas vs miles driven. Has anyone found one designed for plug-in vehicles that can handle the gas/electric combination. Right now I have a Numbers spreadsheet where I can enter trip/ev ratio data to get some semblance of HV, EV, and combined MPGe values, but it is not set up for tracking over time.
Build your own 'app' Project FuelMe, a Better Fuelly Alternative for Electric Vehicles - Articles - Articles - Home - ChargeNY
I use "Fuel Log Evo" Simple. does what i need, and I enter the data before I pull away from the pump! Now if I could only find the first years records of gas purchases, I could have a complete log! It's around somewhere! I'll probably find it when I buy the Tesla!
I suggest letter writing campaign urging Fuelly to 'update' thier site to support EVs & PHEV. Not impressed with thier slow response. Fuelly has the help shape consumer opinion and make a significant contribution to increase the fuel efficiency not only in the US but world wide.