BMW i8 (2017) is 86 mm (3.39 inch) wider and 40 kg (88 lbs) lighter than Opel Insignia Country Tourer (2015).
Opel Insignia Country Tourer (2015) is 224 mm (8.82 inch) longer, 220 mm (8.66 inch) higher and has 386 liters (13.63 ft3) bigger cargo space than BMW i8 (2017).