Does the ave mpg on the EVIC reset on occasion automatically? Mine will be 19mpg one day and 16 the next. I would expect it to be pegged in if not reset.
I've never reset it and have driven >40k miles. Over that many miles it would tend toward a stable average and wouldn't move Unless it resets itself periodically.
Like Jku said, it's an average depending on you're driving.. Simple, if you do 30 mph for 10 miles, it drops, do 65 mph for a steady 100 miles it increases. The electronic indicators are no different than since gas engines were developed. Heavy foot, less MPG, nice and steady, better MPG. Problem now, is you can SEE all the indicators, MPG per gallon, Oil temps., Trans temps. And, the best is wait till you hit the 4 wheel drive season, then you'll see some real nice "decrease" in the MPG, but you'll have some piece of mind.... You got a Wrangler, Got to Love it!
I reset mine every tank and verify it using Fuelly. It's usually within a 1.5mpg window above or below.
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