2011 at 72,000 miles. Included in those miles are 6,000 miles of fairly rough daily dirt road driving.
Like the many Ford Duallys I've had over the years, this Raptor can lay claim to "Built Tough" slogan I suppose, although it rattles a bit more than the 350's.
As an aside, I've had a couple of the Lexus SUV's (GX470) and I have to say those cars are bullet-proof on dirt roads as well as all-around driving. In all my many years of rural driving, I have never driven a car so well built. Never a problem of any kind.
Not near as fun as a Raptor though...