Cadillac ATS Coupe (2018) is 239 mm (9.41 inch) longer and 38 mm (1.50 inch) wider than Mercedes GLA-Class (2016).
Mercedes GLA-Class (2016) is 102 mm (4.02 inch) higher, 155 kg (342 lbs) lighter and has 127 liters (4.48 ft3) bigger cargo space than Cadillac ATS Coupe (2018).