32k-Mile 2018 BMW M6 Gran Coupe Competition Package This 2018 BMW M6 Gran Coupe was optioned with the Competition and Cold Weather Packages, along with an M Performance exhaust system and M ceramic-composite disc brakes. Powered by a twin-turbocharged 4.4-liter V8 paired with a seven-speed M DCT dual-clutch automatic transmission and a limited-slip differential, the car is finished in Space Gray M...