BMW's top-ranked CS line is getting a new model with the M5 CS. Arguably the best sports sedan in world, the CS package pushes the M5 even further, making it the most powerful production model ever to leave Munich. The TwinPower 4.4-liter V8 makes 627 horsepower and 553 lb-ft of torque, good for a 0-60 sprint of just 2.9 seconds — proving that the line between supercars and super sedans is thin enough to be almost invisible. Outside, carbon fiber trim is in abundance. The roof, hood, front and rear splitters, mirrors, and spoiler are all made from the material, with the CS line's signature Gold Bronze colorway applied to the kidney grille, wheels, and badging. The interior features black Merino leather with red accents and M carbon racing buckets. The M5 CS will go on sale in very limited numbers in mid-2021.