Both front and back brakes had to be replaced within 15,000 miles.
At 16,500 miles, a part in the brake system had to be replaced. The "not significant part of the brake system" was unavailable in the U.S. When ordered, it was shipped to an unknown destination, and was untraceable as to its whereabouts. After repetitive appeals and 3 weeks later, the dealer finally took one out of another vehicle.
Although under warranty, Mitsubishi refused to pay the $30/day rental car fee for an alternative rental vehicle, due to the fact that I had a spare car, and did not have to pay an additional rental car fee.
Within the first 10,000 miles, a sensor light indicated something wrong with the motor. It turned out to be a little piece of metal broke loose from the intake manifold, and went into the motor. The dealer said it didn't cause any damage.
Although we don't use the vehicle for off road 4 wheeling, part of the differential had to be replaced within 10,000 miles.
When installing the step boards, it was discovered that the undercarriage had been bent (supposedly during shipping), and the passenger side step board had to be dealer installed after bending the damaged part back into place.
Now, the brakes chatter after driving on new shoes front and back after 3000 miles.
In all, the vehicle has been in the shop 6 times, going on 7, to resurface the rotors, to hopefully eliminate the chattering.