Cadillac CTS-V (2016) is 885 mm (34.84 inch) longer, 17 mm (0.67 inch) wider, 150 mm (5.91 inch) higher and has 53 liters (1.87 ft3) bigger cargo space than Mercedes SLK-Class (2014).
Mercedes SLK-Class (2014) is 425 kg (937 lbs) lighter than Cadillac CTS-V (2016).