After driving the MKC for a couple months the range until fill up began at 312. That was last June and around August the readings began to drop into the low 290s, then 280s and then the 270s around xmas. The oddity was mentioned at the dealer which told me it was driving habits being short trips. Perhaps that is true and if so this is the most advanced tech vehicle i have ever had. The system was reset at the dealer and they said it will level off. That was 3-4 months ago and every fill up says 273. Any thoughts?