tkg12 
2012 BMW 5 Series Sedan 535i xDrive 4dr Sedan AWD (3.0L 6cyl Turbo 8A)
Ultimate Driving Machine, Not Ultimate Warranty
 My recent dealer experience was good as always. The background experience with BMW Corporate was unacceptable. My 2012 5 Series with EDC emits a crunching, groaning metal-on-metal sound that the dealer did a good job of diagnosing, but BMW would not authorize warranty repair for the reason that it is "characteristic."  Exploding airbags that spray shrapnel, deadly ignition system failures, and self-accelerating cars are "characteristic" of other brands, so this does not give me comfort. It seems the ultimate driving machine is not backed up by the ultimate warranty. Since the defect is characteristic, I will find a class-action lawyer, who have their own unfortunate characteristics. 