I have a 2011 BMW 550i with M package and luxury package 6 speed manual. For about 30000 miles no problems. 50000 miles everything changed.

The 2011 model-year BMW 5-series marks the start of the sixth generation of the midsize sedan. The 550i is powered by a 4.4-liter twin-turbocharged V8 rated at 400 hp and 400 lb-ft of torque. It's ...