BMW 4 Series (2016) is 288 mm (11.34 inch) longer, 36 mm (1.42 inch) wider and has 10 liters (0.35 ft3) bigger cargo space than Mercedes GLA-Class (2020).
Mercedes GLA-Class (2020) is 228 mm (8.98 inch) higher and 22 kg (49 lbs) lighter than BMW 4 Series (2016).