BMW 3 Series (2015) is 107 mm (4.21 inch) wider and 530 kg (1,168 lbs) lighter than Mazda BT-50 (2020).
Mazda BT-50 (2020) is 741 mm (29.17 inch) longer, 392 mm (15.43 inch) higher and has 677 liters (23.91 ft3) bigger cargo space than BMW 3 Series (2015).