Bugatti Chiron (2016) is 49 mm (1.93 inch) wider and 651 kg (1,435 lbs) lighter than Rolls-Royce Phantom (2014).
Rolls-Royce Phantom (2014) is 1547 mm (60.91 inch) longer, 429 mm (16.89 inch) higher and has 408 liters (14.41 ft3) bigger cargo space than Bugatti Chiron (2016).