Audi A8 (2021) is 420 kg (926 lbs) lighter than Rolls-Royce Cullinan (2019).
Rolls-Royce Cullinan (2019) is 162 mm (6.38 inch) longer, 55 mm (2.17 inch) wider, 355 mm (13.98 inch) higher and has 55 liters (1.94 ft3) bigger cargo space than Audi A8 (2021).