Mazda 3 (Hatchback) (2020) is 243 kg (536 lbs) lighter than Opel Insignia Sports Tourer (2014).
Opel Insignia Sports Tourer (2014) is 453 mm (17.83 inch) longer, 61 mm (2.40 inch) wider, 73 mm (2.87 inch) higher and has 233 liters (8.23 ft3) bigger cargo space than Mazda 3 (Hatchback) (2020).