BMW 4 Series (2016) is 167 mm (6.57 inch) wider and 510 kg (1,124 lbs) lighter than Mazda BT-50 (2014).
Mazda BT-50 (2014) is 667 mm (26.26 inch) longer, 438 mm (17.24 inch) higher and has 712 liters (25.14 ft3) bigger cargo space than BMW 4 Series (2016).