Chevrolet Impala (2015) is 1576 kg (3,474 lbs) lighter than Rolls-Royce Cullinan (2020).
Rolls-Royce Cullinan (2020) is 228 mm (8.98 inch) longer, 305 mm (12.01 inch) wider, 333 mm (13.11 inch) higher and has 27 liters (0.95 ft3) bigger cargo space than Chevrolet Impala (2015).