McLaren 600LT (2019) is 300 kg (661 lbs) lighter than Opel Insignia (2020).
Opel Insignia (2020) is 237 mm (9.33 inch) longer, 154 mm (6.06 inch) wider, 302 mm (11.89 inch) higher and has 390 liters (13.77 ft3) bigger cargo space than McLaren 600LT (2019).