BMW 4 Series (2015) is 443 kg (977 lbs) lighter than Cadillac CT6-V (2020).
Cadillac CT6-V (2020) is 529 mm (20.83 inch) longer, 10 mm (0.39 inch) wider, 90 mm (3.54 inch) higher and has 2 liters (0.07 ft3) bigger cargo space than BMW 4 Series (2015).