BMW 4 Series (2020) is 149 mm (5.87 inch) wider and 495 kg (1,091 lbs) lighter than Mazda BT-50 (2015).
Mazda BT-50 (2015) is 597 mm (23.50 inch) longer, 438 mm (17.24 inch) higher and has 717 liters (25.32 ft3) bigger cargo space than BMW 4 Series (2020).