So I’m doing some reading on the Cherokee and it looks like even it doesn’t have a true locking differential. It’s just a brake lock like everyone else.
I’m not saying the software mode simulator diff lock lowers gas mileage. (Unless maybe you left it in that mode full time maybe ) I’m saying old school 4WD with actual locking diffs does.
And now I realize you’re talking about the software based terrain selection option. Not a true mechanical locking differential or even limited slip.
And I agree with you Mazda should have included that.