Ford Mustang (2018) is 379 mm (14.92 inch) longer and 81 mm (3.19 inch) wider than Mercedes GLA-Class (2020).
Mercedes GLA-Class (2020) is 215 mm (8.46 inch) higher, 249 kg (549 lbs) lighter and has 103 liters (3.64 ft3) bigger cargo space than Ford Mustang (2018).