Two years old March 7, only 19k miles. Still doesn't rattle and it has at least 1k miles in the dirt and mud.
Past Jeep experience was great, I have over 500k miles on four Jeeps dating back to '89. That's an indication of what I expect from this Jeep as well.
Had it out yesterday in the dirt with a friend who was visiting from up north, I definitely scared him a little kickin' up the dust.
Handles well off-road, sucks up the big ones and I love the factory ride(suspension).
These would be selling for bigger bucks in a stronger economy, we paid $20k for ours in early '07, of course it was a new model as well.
Compared to my '89 Cherokee, which had the factory 'rattle' tailgate, the Pat is very solid as far as the uni-body goes. I don't think it needs any stiffening.