The 2016 MKC was purchased just about 1 year ago. The miles until empty when i bought the car from the dealer was in the 360s range after a fill up. This range steadily fell over the winter after fill ups to the 270s. I took the vehiccle to the dealer and the system was reset so the tech said the readings would rise over time . Now i must say the vehicle has been used for mostly short trips less than 10 miles over the year. The system stayed in the 270s for the last couple of months with the same driving habits. Then the "battery message" warnings started so i replaced the battery at the dealer. Walla, the reading on the first fill up was 415 and has stayed that way for the last few fill ups. Can anyone explain how this could happen?