BMW 4 Series (2016) is 7 mm (0.28 inch) wider than Opel Insignia Grand Sport (2020).
Opel Insignia Grand Sport (2020) is 199 mm (7.83 inch) longer, 72 mm (2.83 inch) higher, 220 kg (485 lbs) lighter and has 45 liters (1.59 ft3) bigger cargo space than BMW 4 Series (2016).
