Hi everyone. I have a 2011 335i convertible (N55 engine) with 67,500 miles. Recently, 1 hour into a spirited drive with auto in manual mode and revs around 4000 RPM, the service engine soon light came on along with that half black/orange motor symbol. In park the engine would shake the car on...

I'm seriously considering buying a 2008 535i (1 previous owner, sport package, cold weather package, 60k miles = $13k) it looks pretty clean. Although, I'm hearing horror stories about the fuel injector problems, fuel pump problems, and general maintenance issues. I already planned on replacing...