Mercedes GLS-Class (2020) is 225 mm (8.86 inch) higher, 145 kg (320 lbs) lighter and has 41 liters (1.45 ft3) bigger cargo space than Rolls-Royce Phantom Coupe (2015).
Rolls-Royce Phantom Coupe (2015) is 277 mm (10.91 inch) longer and 31 mm (1.22 inch) wider than Mercedes GLS-Class (2020).