I have a feeling this could be a possibility but figured since mazda is not just gonna let me know, maybe throw it out here.

The 2012 mazda5 sport does not have the display feature of the touring model where it displays your avg mpg and fuel to zero on the display dash above where the radio and a/c display is. Does anyone know what exact changes were done to have this information? Is it all in the ecu? I just figured with something so miniscule, why they wouldnt just add this feature in for the sport? Has anyone seen or heard anything about a conversion like this to display that information?
Thanks