Cadillac ATS-V (2016) is 44 mm (1.73 inch) longer and 33 mm (1.30 inch) wider than Mercedes CLA-Class (2015).
Mercedes CLA-Class (2015) is 23 mm (0.91 inch) higher, 148 kg (326 lbs) lighter and has 176 liters (6.22 ft3) bigger cargo space than Cadillac ATS-V (2016).