BMW just issued a technical service bulletin to all of its dealers that calls for a stoppage of delivery for all 2013 M5, M6 and M6 Convertible vehicles for a problem with the oil pump.
The bulletin says vehicles fitted with an affected pump can unexpectedly lose oil pressure, potentially causing major engine damage. BMW is contacting customers who have already received their new cars and telling them not to drive their vehicles until they have been inspected by a dealer.
Each dealer will be provided with an explanation of the flaw from the company later today.
This will undoubtedly spur an official NHTSA recall sometime in the near future.