Rolls-Royce Phantom Coupe (2015) is 1914 mm (75.35 inch) longer, 267 mm (10.51 inch) wider, 114 mm (4.49 inch) higher and has 144 liters (5.09 ft3) bigger cargo space than Vauxhall Adam (2017).
Vauxhall Adam (2017) is 1509 kg (3,327 lbs) lighter than Rolls-Royce Phantom Coupe (2015).