BMW 4 Series (2020) is 358 mm (14.09 inch) longer, 18 mm (0.71 inch) wider and has 5 liters (0.18 ft3) bigger cargo space than Mercedes GLA-Class (2017).
Mercedes GLA-Class (2017) is 228 mm (8.98 inch) higher and 37 kg (82 lbs) lighter than BMW 4 Series (2020).