Fuel injectors and high-pressure fuel pumps (S63)
BMW extended the warranty to 10 years or 120,000 miles on the fuel injectors of M6 coupes and convertibles built from July 2012 to January 2015, and on the high-pressure fuel pumps of coupes and convertibles built from July 2012 and Gran Coupes built from March 2013, through February 2014. That cover has now run out on almost every car. Symptoms are hard starting, rough running and misfires.
How to check
Ask for injector and pump history and scan for misfire and fuel pressure faults.
