Acura RDX (2017) is 312 mm (12.28 inch) higher, 238 kg (525 lbs) lighter and has 389 liters (13.74 ft3) bigger cargo space than BMW 8 Series (G14) (2020).
BMW 8 Series (G14) (2020) is 150 mm (5.91 inch) longer and 30 mm (1.18 inch) wider than Acura RDX (2017).