Mercedes AMG GT (2014) is 136 mm (5.35 inch) longer and 105 mm (4.13 inch) wider than Mercedes GLA-Class (2020).
Mercedes GLA-Class (2020) is 322 mm (12.68 inch) higher, 82 kg (181 lbs) lighter and has 85 liters (3.00 ft3) bigger cargo space than Mercedes AMG GT (2014).