Originally Posted by Kewl X5

I'm at 166K miles, but unfortuantely, the auto tranny went out about 30K miles ago, but I did change the tranny oil and who knows? Also, right cat converter needed to be replaced, but my O2 sensors were gone, prolly should have replaced the O2 sensor @ 100K miles....now, I'm not burning oil anymore like I did since the bad O2 sensors was making my engine run richer than it should....No cold weather related problems (e.g. oil separator) due to our local climate is quite mild.

Already went through 4 window regulators....but other than that, the X5 has been fine. The X5 runs much better with better fuel mileage since the cat was replaced.