BMW 8 Series (G15) (2018) is 323 mm (12.72 inch) longer and 74 mm (2.91 inch) wider than Ford Grand C-Max (2015).
Ford Grand C-Max (2015) is 343 mm (13.50 inch) higher, 431 kg (950 lbs) lighter and has 55 liters (1.94 ft3) bigger cargo space than BMW 8 Series (G15) (2018).