Cadillac CTS-V (2019) is 627 mm (24.69 inch) longer, 33 mm (1.30 inch) wider, 158 mm (6.22 inch) higher and has 238 liters (8.40 ft3) bigger cargo space than Porsche 718 Cayman (2017).
Porsche 718 Cayman (2017) is 439 kg (968 lbs) lighter than Cadillac CTS-V (2019).
