Two problems related to engine oil leaking have been reported for the 2013 BMW 328. The most recently reported issues are listed below.
Unknown oil leak started around 75k. Noticed it in my garage. I've only had this car for 2 years.
There's a leaking coming from the engine bay area I replace the valve cover gasket but that hasn't stop the smoke coming out of the car I've seen in several BMW forums that owners of 3 series have complain about these and the two major problems that cause this is 1. The valve cover gasket or the turbo oil lines the oil get into the catalyst converter and start smoking and heating and this might cause a fire while you are driving or coming to a complete stop.