Cadillac CTS-V (2017) is 363 mm (14.29 inch) longer, 220 kg (485 lbs) lighter and has 38 liters (1.34 ft3) bigger cargo space than Mercedes GLC-Class (2015).
Mercedes GLC-Class (2015) is 56 mm (2.20 inch) wider and 206 mm (8.11 inch) higher than Cadillac CTS-V (2017).