Version 3.1 adds the feature EPA. As the name suggests, this feature must have something to do with the Environmental Protection Agency. As a matter of fact it does. All new cars or trucks sold in the United States must have a Vehicle Emission Control sticker affixed to the window. Among other information, this sticker must contain the fuel efficiency data for the vehicle. It is this fuel efficiency, and in the case of EVs (electric vehicles) range, data that the EPA feature provides. In addition to each model, the manufacturer must provide data for each combination of transmission and wheel size they intend to sell. Vehicles are divided into four classes: Electic(EVs), Hybrids(HYVs), Internal Combustion Engine(ICE),and Fuel Cell Vehicles(FCV).
There are a large number of EVs combinations listed(over 150), and over 1100 ICE vehicles combinations listed. For ease of locating a particular vehicle, they are arrange alphabetically by model name.
For ease in locating a particular vehicle model, lightly flick a finger up or down in the white area of the model selection window until you see it and then select it by tapping the green model name.
The Environmental Protection Agency updates vehicle data several times a year(usually quarterly). CarFacts will also be updated with the new EPA data.
Version 3.1.1 began as a relatively minor update. My idea was to implement user keyboard input alerts for incorrect number inputs, i.e. , inputs which include non-numeric characters. What I forgot about was, this would require alert message translation for all six languages supported by CarFacts. Also, Apple from time to time, degredates (makes obsolete) certain software, requiring using something different in my code. This was one of those times. Lastly, a correction to version 3.1 notes, EPA published annual data is only updated annually.