Audi S6 (2015) is 665 kg (1,466 lbs) lighter than Rolls-Royce Phantom (2018).
Rolls-Royce Phantom (2018) is 1058 mm (41.65 inch) longer, 143 mm (5.63 inch) wider, 216 mm (8.50 inch) higher and has 139 liters (4.91 ft3) bigger cargo space than Audi S6 (2015).