Citroen C1 (2017) is 702 kg (1,548 lbs) lighter than Opel Insignia (2014).
Opel Insignia (2014) is 1376 mm (54.17 inch) longer, 464 mm (18.27 inch) wider, 30 mm (1.18 inch) higher and has 344 liters (12.15 ft3) bigger cargo space than Citroen C1 (2017).