Competing in the mid-size sedan segment, the 2018 BMW M550i is a direct competitor to the Alfa Romeo Giulia Quadrifoglio, the Maserati Ghibli, and the Audi S6. The M550i starts off at an MSRP of $73,900, with standalone trim in the lineup. It is offered with a 4.4L Twin-Turbocharged V8 engine and an 8-Speed Automatic transmission, producing 456 horsepower and 480 lb-ft of torque. Through this powertrain, the M550i manages a 0-60 of 3.8 seconds and a combined fuel economy of 19 MPG.