Cadillac STS (2018) is 268 mm (10.55 inch) longer and 20 mm (0.79 inch) wider than Opel Astra Sports Tourer (2015).
Opel Astra Sports Tourer (2015) is 82 mm (3.23 inch) higher, 284 kg (626 lbs) lighter and has 152 liters (5.37 ft3) bigger cargo space than Cadillac STS (2018).
