What are some of the possible causes for my car to leak oil. on 2006 BMW 330i

My car only has 80,000 miles. I was stunned that it leaked oil and plus I just purchased it from a BMW dealership.

Asked by for the 2006 BMW 330i
Most common cause is a failed oil pan gasket that needs replaced. Other causes are, oil pan plug missing or poor condition gasket. Improperly seated oil filter. Check these and see if 1 of them is the cause.