The BMW 8 Series is a large and imposing luxury ... turbocharged 3.0-liter inline-six-cylinder engine, while the M850i and the bonkers-fast (and expensive) M8 models get turbocharged 4.4-liter ...
But the petrol M850i is harder to justify, being less comfortable than the Mercedes-Benz S560 Coupé and less entertaining than the Porsche 911 and Aston Martin DB11.
The M850i adds a sports exhaust system, lightweight 20in wheels and the M Sport differential, for that added cornering traction. All models also get a wind deflector and BMW’s Air Collars ...