IIRC, it was a relatively high mileage used vehicle purchase.

If an engine fails at low miles, we look to design and manufacturing issues.

If an engine fails at higher mileage, we look to maintenance issues.

So, one of the first things would be to review all maintenance records and determine what oil was used, what filter was used, what change interval was used, and who did the maintenance.

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2007 X3 3.0si, 6 MT, Premium, White

Retired:
2008 535i, 6 MT, M Sport, Premium, Space Grey
2003 X5 3.0 Steptronic, Premium, Titanium Silver
2002 325xi 5 MT, Steel Grey
2004 Z4 3.0 Premium, Sport, SMG, Maldives Blue