I am at 97,000 km, my Jeep will be 2 years old in May 2014. I do a lot of driving, mostly highway. I have taken it moose hunting a few times and out in fields when bow hunting.
My buddy always says "I'm not so sure of this" when we head down a bush trail, but man, this things goes places guys with Chevy and Ford 4x4's don't. They park theirs on the side before the going gets rough. That Quadra Drive II system walks through anything I have thrown at it yet... !