Fred 
2011 BMW 5 Series Sedan 550i xDrive 4dr Sedan AWD (4.4L 8cyl Turbo 8A)
Great looking HORRIBLE reliability! N63 engine
 This car is absolutely fantastic in execution. The majestic styling, terrific handling, and fantastic materials. Otherwise it's a reliability nightmare. Everything that can go wrong with this car can and has. The V8 engine has tremendous power but has nightmarish reliability woes ie; timing chain issues, valve stem seals, pcv issues, burning a quart of oil every 500 miles...etc. Steer clear of this cat, I wish I had. Oh yeah, HORRIBLE fuel economy.