Audi A7 (2016) is 55 mm (2.17 inch) longer and 54 mm (2.13 inch) wider than Opel Insignia Sports Tourer (2014).
Opel Insignia Sports Tourer (2014) is 93 mm (3.66 inch) higher, 305 kg (672 lbs) lighter and has 25 liters (0.88 ft3) bigger cargo space than Audi A7 (2016).