Audi A8 (2015) is 743 kg (1,638 lbs) lighter than Rolls-Royce Cullinan (2019).
Rolls-Royce Cullinan (2019) is 76 mm (2.99 inch) longer, 51 mm (2.01 inch) wider, 358 mm (14.09 inch) higher and has 70 liters (2.47 ft3) bigger cargo space than Audi A8 (2015).