BMW 4 Series (2015) is 24 mm (0.94 inch) longer, 59 mm (2.32 inch) wider, 48 kg (106 lbs) lighter and has 151 liters (5.33 ft3) bigger cargo space than Cadillac ATS-V (2018).
Cadillac ATS-V (2018) is 32 mm (1.26 inch) higher than BMW 4 Series (2015).