I didn't reset my mpg calculator til it hit 1400 miles. My 4x4 avg was 16.3 with normal, mixed driving. (no 4x4 usage) That included one long roadtrip, but it also included a little time towing our travel trailer.
I reset it and it got 15.2 last week.
Your 11.5 mpg sounds low. Are you doing any off-road? Or maybe you need to get your foot out of the bell housing. (easier said than done)
