59,000 miles and so far:

Replaced drivers side catalytic converter

Exhaust manifold

Passenger side cylinder head was replaced due to it developing small pin holes

Put new tires on it last week (I am SO glad to be done with those shi**y General Grabbers)

Need to get windshield replaced due to it cracking 2 winters ago, due to heat from defrost hittng the cold glass and causing it to crack

Everything except for the tires and windshield were covered under warrenty. I have been pretty happy with my X, but won't be getting another one. I need a full-size pick-up, and will be replacing the X with that.