Cadillac ATS-V (2018) is 264 mm (10.39 inch) longer than Mercedes GLA-Class (2020).
Mercedes GLA-Class (2020) is 23 mm (0.91 inch) wider, 196 mm (7.72 inch) higher, 70 kg (154 lbs) lighter and has 141 liters (4.98 ft3) bigger cargo space than Cadillac ATS-V (2018).