Audi R8 (2014) is 1014 kg (2,235 lbs) lighter than Rolls-Royce Phantom (2015).
Rolls-Royce Phantom (2015) is 1397 mm (55.00 inch) longer, 46 mm (1.81 inch) wider, 393 mm (15.47 inch) higher and has 360 liters (12.71 ft3) bigger cargo space than Audi R8 (2014).