If you are questioning it, dump it for something larger and more reliable. I have spent quite a bit in repairs ($12K+), but I have justified it with (1) I still love driving it and (2) I own it, free and clear.

Good luck!!

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2001 X5 3.0i (PP/WP/AP) Traded at 213K miles
RARE White on Black - Why does everyone get Tan??
First E53 with 215s on XOutpost!!