After starting to drive my car to the top of my street which was only 15 feet from my driveway, i hear a loud clunk from the rear of the car. after taking my car to the dealership the diagnosed the problem was a sheered rear differential front mount bolt. the problem is mazda knows about this issue and have a reinforcement kit to fix it. this is a problem since it seems like it is a design flaw in the equipment and mazda has failed to recall this product since no one has filed complaint or been in accident (thankfully) due to this issue. *tr *js