When I bought the car with 7000 miles I could get 23 to 24 miles range in the spring and fall with temps in the 70 to 80 range. My normal drive is 9 miles one way, I could go both directions on one charge. I would routinely get 1000+ miles per tank of gas.
Now with right at 80,000 miles the same drive in the same temp environment only gets 16 miles per charge. I can't make the whole round trip with all electric power, and I average about 600 to 700 miles per tank.
Over the last few winter to spring transitions I have noticed about 2 to 3 miles per year drop in total EV range. I figure by the end of summer I will likely be down to 14 miles total range.
This seems too low to me. The battery co trol module (BECM?) was replaced about a year ago because the range dropped suddenly to about 12 miles and threw up a code indicating a bad module. When they fixed it, it came back up to around 18 miles total range, but over the last winter I have lost another 2 miles in total range.
The Ford Documentation is somewhat fuzzy about the expected range as the car ages, but I was told that the computer restricts the charge capacity as the mileage increases. How much loss of range should be acceptable for this battery? It is under warranty to 100,000 miles, and I am curious if it drops below 12 miles which is roughly half the range when new, is that low enough for the battery to be replaced under warranty?
