Originally Posted by tcampb01

My own motivation is that its' really hard for me to compare my FEH to others when I know that the majority of owners are on one coast or the other and I'm in the middle of the country with radically different whether. My summer tanks consistently average the high-side of the window-sticker fuel economy, but my winter tanks lose about 25% of my fuel economy due to the frigid weather that the west coast or the south never has (well, that combined with my short trips not allowing the engine or batteries to warm sufficiently to get the good economy.) Being able to filter the vehicle average fuel economy in the database to just my region would give me a better view of how I'm doing.

The next challenge is that the database doesn't have dates or seasons -- so we can't yet compare "summer" tanks to "winter" tanks.