Cadillac XTS (2019) is 725 mm (28.54 inch) longer, 52 mm (2.05 inch) wider, 208 mm (8.19 inch) higher and has 347 liters (12.25 ft3) bigger cargo space than Porsche Cayman (2016).
Porsche Cayman (2016) is 419 kg (924 lbs) lighter than Cadillac XTS (2019).
