My 2010 MZ5 is just over 29k when I took it in today. They replaced ONE rear shock under warranty because it was blown. Then they wouldn't give the old one back, stating they had to dispose of it because if it was found in the garbage, they would be fine 100,000 or some crap. SO I wonder what happens to them when we buy parts at their counter and install them ourselves? Lot a garbage is all I heard.