Audi A3 (Sedan) (2017) is 394 kg (869 lbs) lighter than Cadillac CT6 (2016).
Cadillac CT6 (2016) is 724 mm (28.50 inch) longer, 84 mm (3.31 inch) wider, 55 mm (2.17 inch) higher and has 8 liters (0.28 ft3) bigger cargo space than Audi A3 (Sedan) (2017).
