One problem related to battery has been reported for the 2011 BMW 328. The most recently reported issues are listed below.
Vehicle was delivered on 2/3/2011 and has experienced ongoing & unresolved electrical shorts, battery discharge, failures to start, erroneous door ajar messages, service engine soon & electrical malfunction messages leaving passengers stranded. Vehicle towed to dealership(s) 2 times. Dates/mileage of failure(s): 19feb2011 / 377 miles, 18apr2011 / 2,336, 01jun2011 / 3,816, 12 Aug 2011 / 4,690, 24oct2011 / 6,867, 21oct2011 / 6,943. Formal notices served to braman BMW / miami, south motors / miami & BMW corporate / NJ to repair or replace vehicle have gone unanswered. Pending lemon law / legal action currently pending.