Bought the Mercury Mountaineer in spring of 2011 with 111,000 miles. In April of 2012 a shop replaced the left rear wheel bearing (AWD, IRS), said the wheel was going to fall off. Now 10 months and about 12,000 miles later, I have the left rear tire repaired and the guy showed me the wheel is very loose, couple inches lateral play at the tread area, so back to shop, but this time my regular shop. The other shop is no longer on my list of good shops for other reasons (e.g., the flow master muffler fiasco in another thread about last October). Hopefully it was just a poor job by the other shop and not a design defect or some other bad part that will keep eating bearings.