Acura RDX (2015) is 337 mm (13.27 inch) higher, 138 kg (304 lbs) lighter and has 319 liters (11.27 ft3) bigger cargo space than BMW 8 Series (G15) (2020).
BMW 8 Series (G15) (2020) is 183 mm (7.20 inch) longer and 30 mm (1.18 inch) wider than Acura RDX (2015).