Opel Insignia (2017) is 247 mm (9.72 inch) longer and 288 mm (11.34 inch) wider than Subaru Forester (2014).
Subaru Forester (2014) is 234 mm (9.21 inch) higher, 131 kg (289 lbs) lighter and has 352 liters (12.43 ft3) bigger cargo space than Opel Insignia (2017).